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- VERSION X10/6.6B
- ------- --------
-
- General
- -------
-
- vt102 and Tektronix 4015 emulation in separate windows, each with its own
- mode menu (control middle button).
-
- Switching between each mode can be done via the menus, or with escape
- sequences:
- vt102 -- \E[?38h --> tek
- tek -- \E\003 --> vt102
-
- The windows hilite themselves when the mouse is with either window or when
- one of these is the focus window. The windows unhilite when the mouse moves
- out of the window and neither is the focus window. Hiliting appears as
- windows with solid color borders and solid block cursors. Unhiliting appears
- as windows with "grayed" borders and a rectangle cursor.
-
- The parser for both modes is table-driven and is much more efficient than the
- original parsers.
-
- If UTMP is define in the Makefile, then each instance of xterm makes an entry
- in /etc/utmp and thus appears with the "who" command.
-
- If both windows are visible and one is iconified, both disappear. Deiconifing
- causes both to appear again.
-
- If the initial mode is vt102, /etc/termcap is searched, in order, for the
- following termcaps, until one is found:
- xterms, xterm, vt102, vt100, ansi, dumb
- If the vt102 window happens to be 80x24, then xterms is added to the begining
- of the list. If the initial mode is tek, the termcaps searched for are:
- tek4015, tek4014, tek4013, tek4010, dumb
-
- The window size is passed to the operating system via TIOCSWINSZ (4.3) or
- TIOCSSIZE (sun). A SIGWINCH siganl is sent if the vt102 window is resized.
-
- For login windows, menus are disabled until a user has successfully login.
-
- A new menu (xterm) has been added (control left button) that gives the version
- number. The menu allows titlebars to be displayed (see below), the windows
- redrawn, or for various signals to be sent to the process group of the command
- xterm is executing. The signals include SIGCONT, SIGTSTP,SIGHUP, SIGINT,
- SIGTERM and SIGKILL.
-
- Titlebars for the window can be turned on with .Xdefaults
- "xterm.TitleBar on", with command line option -tb or via the xterm menu.
-
- The titlebar font is, by default, vtsingle. The font can be changed with
- .Xdefaults "xterm.TitleFont helv12b" for helv12b font or via command line
- option -ft helv12b.
-
- The titlebar look like Macintosh titlebars. A series of strips appears when the
- window is hilited, and are gone when unhilited.
-
- Both windows are visible and the mouse cursor is in either window, only the
- active window is hilited (before both windows were hilited).
-
- A time delay has been added for window hiliting/unhiliting so that the mouse
- passing momentarily through a window will not cause it to hilite and then
- unhilite when autoraise is on.
-
- Automatic raising of windows has been added, so that the window is automatically
- raised (after the time delay) when the mouse enters a window. The mode is
- turned on via .Xdefaults "xterm.AutoRaise on", via command line option -ar
- or via the xterm menu. This is a dubious feature.
-
- Visual bell mode can be turned on via .Xdefaults "xterm.VisualBell on", via
- command line option -vb and from the xterm menu.
-
- If the NOWINDOWMENU is not defined, then
- Control right button activates a windows menu that lists the visible (named)
- windows in back to front order reading down. Selecting a window name cause
- that window to be raised to the top (useful for getting to a buried
- window). This feature does not belong in xterm, and will be
- completely removed in V11 of X, where window managers can be more intellegent.
-
- The tek window has the same name as the vt102 window, but with " (Tek)"
- appended (before they were the same).
-
- During startup, xterm tries to create unique window names so that the
- windows menu will not contain ambiguous windows. It does this by look
- through the list of windows and if a name exist that is the same, " #N"
- will be appended to make it unique (N is a number two or greater).
-
- Some reorganization of the code and data has been done to put more data in
- the text segment so many xterm processes can share the (read-only) data, rather
- than having n copies in core.
-
- There are several bug fixes including better sun compatibility and a problem
- in the vt102 parse table.
-
- With some mods to libX.a, xterm solves a problem of running xterm on a remote
- host with a local window, when the remote host uses a different keymap (like
- running on a remote microvax on a sun). If the environment variable KEYBD
- is set or the command line option "-kb name" is given, then a keymap file
- with the given name is used, rather than the default of your .Xkeymap file.
- Standard names for keymap files is yet to be made. (This option is turned on
- via defining KEYBD in the Makefile.)
-
- Xterm now always creates its own icon(s), which includes the window's name.
- The -i option now means startup showing the icon. The option #[+-]x[+-]y
- means to position the icon there instead of centered within the window.
- The bitmap within the icon show the current active mode (either vt102 or
- tek). The icon reverse-videos with the windows.
-
- By default, the icons are a miniture window and the window title. The icon
- can also be miniture versions of the window. This is activated with .Xdefaults
- "xterm.ActiveIcon on", -ai from the command line, or from the xterm menu.
-
- The active icon does not normally allow input. A menu selection in the xterm
- menu will allow input to the icon.
-
- When the mouse is in the stripped area of the titlebar, you can get any
- of the three menus without pressing the control key. Clicking in the
- actual title iconifies. Clicking in an icon deiconifies it.
-
- Many mode option on the command line allow a '+' instead of '-' to indicate
- turning off the indicated mode.
-
- Color support has been improved, so that an unselected cursor is an empty
- rectangle with the foreground color, and the selected cursor is a filled
- rectangle with the cursor color.
-
- A better and faster menu package has been added that supports (Mac-like)
- checkmarks and dimmed (disabled and grayed) item, as well as line separator
- items.
-
- To conserve on resources, the unhilited border of the window(s) is now
- always a gray pixmap, which is shared by the menu package.
-
- Logging capability has been added, in which all characters sent to the
- xterm window are recorded. The mode is turned on by using .Xdefaults option
- "xterm.Logging on", -l on the command line, from the xterm menu or the
- escape sequence \E[?46h in vt102 mode. Logging is turned off through the
- xterm menu or \E[?46l in vt102 mode. The default log file is XtermLog.XXXXX
- (XXXXX is the process id of xterm) and is in the initial directory in which
- xterm was started (the home directory for login xterms). Each logging start
- appends to the end of the loggin file, and each logging stop closes the file.
-
- An alternate logging file may be given with .Xdefaults "xterm.LogFile file"
- (file is the alternate filename) or with command line option "-lf file".
- If the first character of the logfile name is `|', then the rest of the
- name passed to the shell for execution and a pipe is created to the process.
- In this case, each time the log is started, a new process is created and
- when logging is turned off, the pipe is closed. Thus, a logfile name of
- "| lpr", will send text to the line printer each time logging is turned off.
-
- Certain modes may be inhibited by specifying in the .Xdefaults file. A
- change to the initial logging mode may be prevented with "xterm.LogInhibit on",
- which will prevent changes to logging from the menu or from escape sequences.
- "xterm.SignalInhibit on" disables the xterm menu signal sending (Continue is
- still allowed). "xterm.TekInhibit on" prevents entering into Tektronix mode.
-
- As per edjames@eros, xterm sets the environment variable WINDOWID, which
- contains the Window id of the initial window (normally vt102, but could be
- the tek window if the -t option were specified). This "feature" is
- bogus, as it may not always give you all information you need to
- access a window.
-
- The title in the title bar may be changed with the \E]0;new title\007 escape
- sequence. Any non-printing character terminates the title string. The
- windows and icons are also renamed, and the icons are resized to fit the
- new title.
-
- The log file may be changed with the \E]46;new log file\007 escape sequence.
- If the log file name is empty, the default log file name is used.
-
- In visual bell mode, the icons now flash on receipt of a control-G.
-
- If xterm is iconified and new input comes in, a box is drawn around the
- icon title.
-
- The bitmap used for the icons is now user definable. The VT102 bitmap may be
- set with .Xdefaults "xterm.IconBitmap file" or with "-ib file" on the command
- line. The Tek bitmap may be set with .Xdefaults "xterm.TekIconBitmap file"
- or with "-it file" on the command line. These files are assumed to be
- bitmap(1) format files. If only one bitmap file is specified, it is used for
- both modes. If both are specified as null file names, then no bitmap is drawn.
-
- Normally, the title text of the icon is displayed to the right of the
- bitmap. The text may be displayed under the bitmap by using .Xdefaults
- "xterm.TextUnderIcon on" or with -ti on the command line.
-
- The mouse may be automatically warpped to the xterm window when it is
- deiconified by using .Xdefaults "xterm.DeiconifyWarp on" or using -dw on
- the command line. This is also of questionable merit.
-
- The standard error output used by xterm is now improved. Normally it will
- be the same standard error when xterm is started. For login xterms
- (-L specified) then the standard error will be to /dev/console.
-
- X error events are now intercepted so that xterm may cleanup before exiting
- (like resetting the tty modes and clearing the /etc/utmp entry).
-
- VT102
- -----
-
- vt102 emulation is much more complete than the original xterm.
-
- Underlined characters is now supported.
-
- A partial sun tty emulation is provided (x, y, w, h, c, r are numbers):
- \E[3;x;yt move window to (x, y)
- \E[4;w;ht resize window - width w, height h pixels
- \E[5t raise window
- \E[6t lower window
- \E[7t redisplay window
- \E[8;r;ct resize window - r rows, c columns
- \E[13t send window position \E[3;x;yt
- \E[14t send window size (pixel) \E[4;w;ht
- \E[18t send window size (rows and columns) \E[8;r;ct
-
- The text for reexcuting (shift-left button), copy (shift-middle button-drag)
- and paste (shift-right button) is now hilited by reverse video.
-
- Pasting text that was originally displayed as vt102 graphic characters now
- returns the original ascii character (and not the internal representation).
-
- Text that is scrolled off the top of the window can be saved and is accessable
- via a scrollbar. By default, saving is off and can be turned changed via
- escape sequence \E[?43h (on) and \E[43l (off) or from the mode menu. The
- scrollbar is normally off, but may be made visible with .Xdefault option
- "xterm.ScrollBar on" or command line option -sb. The scrollbar state can
- be changed via the mode menu or escape sequences \E[?42h (on) and \E[?42l
- (off).
-
- The scrollbar is composed of three parts (from top down), the scroll button,
- the save button and the scroll region. The scroll button changes what is
- displayed in the window. Left button pressed in the scroll button causes
- the window to move one line up (the text scrolls one line down). The right
- button moves one line down. Shift left button moves one screenful up and shift
- right button moves one screenful down. Control left button moves to the top
- of the buffer, control right button moves to the bottom. The visible area
- is shown graphically in the scroll region, with the (usually) dark region
- that part of the buffer that appears in the window. Clicking the left or
- right button in the scroll region cause the visible region to be position
- with its top at the mouse position. The save button shows the state of saving
- or not saving lines. By default, any input or output will return the
- screen to the bottom.
-
- The default maximum number of lines saved off the top is 64, but can be
- specified in .Xdefaults as "xterm.SaveLines 100" for 100 lines, or as
- a command line option "-sl 100".
-
- The lines saved can be cleared via the mode menu.
-
- A margin bell can be turned on via .Xdefaults "xterm.MarginBell on", command
- line option -mb or mode menu. The default number of columns from the right
- margin is 10 and is settable via .Xdefaults "xterm.NMarginBell 15" for 15
- columns, or via command line option -nb 15. The mode may be changed by escape
- sequence \E[?44h (on) and \E[?44l (off).
-
- To emulate the vt102 switching between 80 and 132 columns, the mode may
- be turned on via .Xdefaults "xterm.C132 on", via command line option -132 or
- via the mode menu. The mode may be changed by escape sequence \E[?40h (on)
- and \E[?40l (off).
-
- A mode that fixes a bug in curses (e.g. when using "more" on lines that have
- lines that print on the last column of the line and the next line begins with
- a tab) can be turned on .Xdefaults "xterm.Curses on", command line option
- -cu or via the mode menu. The mode may be changed by escape sequence
- \E[?41h (on) and \E[?41l (off).
-
- Auto linefeed mode and auto repeat are supported.
-
- The mode menu is now more descriptive.
-
- Most Dec Private mode settings can be save away internally using \E[?ns,
- where n is the same number to set or reset the Dec Private mode. The
- mode can be restored using \E[?nr. This can be used in termcap for vi, for
- example, to turn off saving of lines, but restore whatever the original
- state was on exit.
-
- An optional status line (in reverse video) has been added to the bottom of
- the vt102 window. The following escape sequences work on the status line:
- \E[?S show status line
- \E[?H hide status line
- \E[?nT enter status line, at column n
- \E[?F return to the position before entry into status line
- \E[?E erase status line
- Also, the status line may be turned on via .Xdefaults "xterm.StatusLine on",
- the -st commandline option or from the mode menu.
-
- Reverse wraparound can be enabled with .Xdefaults "xterm.ReverseWrap on", via
- command line option -rw or from the mode menu. Also the escape sequences
- \E[?45h turns on reverse wraparound and \E[?45l turns it off. Reverse
- wraparound only works when autowrap is also on and is useful, for instance,
- when entering a long line that wraps to the shell and needing to erase
- backwards to correct it.
-
- The scrollbar code has been modified to use fewer pixmaps, and should work
- better on the GPX.
-
- An alternate screen buffer is now supported. Entry into the alternate screen
- buffer with \E[?47h will automatically inhibit lines from being saved off the
- top of the window and \E[?47l returns to the normal screen buffer and restores
- the original state of line saving. The new termcap entry causes vi to use
- the alternate screen buffer on entry and clears the alternate buffer before
- returning to the regular buffer.
-
- If the normal font is specified and the bold font isn't, then the bold font
- is automatically created be overstring, ala dcmartin@ingres.
-
- The scrollbar now has its own menu, available when the middle button is pressed
- anywhere in the scrollbar. The menu entries originally in the mode menu having
- to do with the scrollbar have been moved to the scrollbar menu (except the
- Scrollbar entry, to initially display the scrollbar).
-
- The scroll bar may be repositioned automatically at the bottom when input comes
- in by using .Xdefaults "xterm.ScrollInput on", using -si on the command line
- or via the scrollbar menu.
-
- The scroll bar may be repositioned automatically at the bottom when a key is
- pressed by using .Xdefaults "xterm.ScrollKey on", using -sk on the command line
- or via the scrollbar menu.
-
- Normally the status line is displayed in reverse video. A normal-video status
- line may be obtained by using .Xdefaults "xterm.StatusNormal on", with
- -sn on the command line or via the mode menu, or may be controlled with the
- escape sequences \E[?48h (on) and \E[?48l (off). In normal video mode, a
- box is still drawn around the status line.
-
- Page scroll mode may be activated by using .Xdefaults "xterm.PageScroll on",
- using -ps on the command line or via the mode menu, or may be control by the
- escape sequences \E[?49h (on) and \E[?49l (off). In page scroll mode,
- after a page of input has been displayed, further scrolling is disabled
- and the text cursor is hidden. Typing a carriage return allows another
- line to be scrolled (the return is discarded). Pressing the space bar (or any
- other printable character) causes another page to be scrolled (the character
- is discarded). Typing a control character scrolls another page, but the
- control character is sent (e.g., your interrupt character).
-
- A page in page scroll mode is defined to be the number of lines in the current
- scrolling region, minus the page overlap number. The page overlap is one by
- default, but may be set by .Xdefaults "xterm.PageOverlap 3" or via the
- "-po 3" command line option.
-
- Page scroll mode is automatically inhibited when using the alternate screen.
-
- The icon windows are now named, with " (icon)" appended. Thus, iconified
- xterms now show up in the windows menu.
-
- Tektronix
- ---------
-
- Tek mode is much more complete than the original.
-
- Tek standard two column mode is supported.
-
- Four different character sizes are supported and can be changed via the
- tek menu.
-
- 5 line types are supported (solid, dotted, short dashed, long dashed and
- dot dashed).
-
- All of the tek character sequences are stored and can be saved into a file
- via the standard COPY escape sequence or from the mode menu. The file created
- is named COPYyy-mm-dd.hh:mm:ss (COPY plus the date and time) and is placed
- in the initial directory in which xterm was started. Login xterms use the
- users home directory.
-
- When the tek window is being refreshed, the mouse cursor shows a clock.
-
- The X geometry of the Tek window can be given on the command line (independently
- of the VT102 window) by using %geometry (`%' rather than `=').
-
- In GIN mode, pressing a key will send the key and the mouse coordinates of
- the cross cursor, similar to standard Tek GIN mode. Pressing a mouse button
- instead will send the character `l', `m' or `r' depending on whether the
- left, middle or right button was pressed, respectively. If the shift key was
- down when the button was pressed, the corresponding upper case character is
- sent. To distinquish a button press from a key press, the high bit of the
- character is set, but this is only useful if the tty mode is set to RAW to
- pass all 8 bits.
-