INT 60 u - HP 95LX System Manager - "EDIT_INIT"
        DI = 0400h
        STACK:  2 WORDs unused dummies (for calls from high level languages)
                DWORD   pointer to edit record (see below)
                DWORD   pointer to string to be edited
                WORD    initial length of string being edited
                WORD    maximum length of edited string
                WORD    row of edit field
                WORD    leftmost column of edit field
Return: ???
        STACK unchanged

Format of edit record:
Offset  Size    Description
 00h    WORD    current length of edit buffer
 02h    BYTE    flag for special processing on first character
 03h    BYTE    flags
                bit 0: tab handling
 04h    WORD    editing in prompt window?
 06h    DWORD   pointer to top line of prompt window message
 0Ah    WORD    length of top line of prompt
 0Ch    DWORD   pointer to second line of prompt window message
 10h    WORD    length of second line of prompt
 12h 80 BYTEs   workspace for editing
 62h  2 WORDs   line array needed for multi-line editing
 66h 36 BYTEs   multi-line edit record (see below)
 8Ah    WORD    displayable columns

Format of multi-line edit record:
Offset  Size    Description
 00h    DWORD   pointer to user-supplied edit buffer
 04h    WORD    length of edit buffer
 06h    WORD    current cursor position
 08h    WORD    starting row of edit area (-3 is topmost, 0 is first user line)
 0Ah    WORD    starting column of edit area
 0Ch    WORD    height of edit area
 0Eh    WORD    width of edit area
 10h    WORD    current top row (-3 is topmost, 0 is first user line)
 12h    WORD    number of rows displayable
 14h    BYTE    cursor column
 15h    BYTE    01h if buffer has been modified
 16h    BYTE    first displayable column (ticker fields only)
 17h    BYTE    01h if wordwrap enabled, FFh if ticker field
 18h    DWORD   pointer to array of line starts (at least one bigger than edit
                  area is high)
 1Ch    BYTE    currently marking?
 1Dh    BYTE    flag
 1Eh    WORD    offset of mark start
 20h    WORD    offset of mark end (inclusive)
 22h    WORD    displayable columns