Table Features

• Options>Table>Multi/Single - This option determines whether Source Manager combines all files into one table or creates separate tables for each directory they're from.  If you change this option to "single" while tables are already created, it will collapse them and create one new table containing all files, and will name that table "Source Manager".  And vice-versa, if you switch to "multi" when a single table exists, it will close that table and build new ones for each directory the files are from, and will name them after their parent directories.
• Path popups - If you click and hold on any of the icons next to the file and project names you'll popup a menu that shows you the full path of the file or project, similar to the way the finder works when you command-click the title bar of a window.
• Comment/Task Edit - Double-click on the Comment or Task field, and you get an editing window showing the file's comment and task, which you can edit.  Extremely handy for checking or revising what you did to each file before you proceed to check in.  You can also select multiple files and then choose Edit Comment, which tells Source Manager that you want the comment and/or task you enter to be inserted in all the selected files.  This can be very handy when you've just modified a ton of files to accomplish some basic goal, and you don't want to write individual comments and/or tasks for each file.  Also handy for setting just the Task fields of a bunch of files, leaving their comments alone (When you leave either the comment or task field blank, Source Manager will leave whatever was in that field in 'ckid' unchanged).  There's also an Append checkbox that lets you append your comments to the existing comments.
Drag Manager stuff:  If you have the Drag Manager extension or have System 7.5, which has it built in, you can do some neat stuff: Option drag one Comment or Task field to another to copy it.  This works either within one table or across tables!
• Open File - a double-click on the Filename field opens the file with whatever application created it.  This is identical to double-clicking the file's icon in the finder, but is done using an 'sope' Apple Event.  I love this feature, and have used it for things totally unrelated to source control.
• Sorting - The list implements a finder-like user interface for sorting.  Simply click on the category (i.e. Filename, Project, etc.) to sort by that category.  Tip: option click to reverse the sort order (ascending/descending)
One nice option is the Mark Unchanged option, which makes Source Manager mark (with a "•") any files which, according to their mod date, have not changed  from the time you got them from SourceSafe or SourceServer.  You might want to cancel the checkout of these files or, if they're Modified-Read-Only, you can change them back to Read-Only, so that they don't need to be checked in and won't prevent new checkouts from overwriting them.
• Copy text - you can copy the text of any cell that is selected, even multiple cells, by the standard CMD-C.  If you have the "Full File Paths" option turned on, this would be a good way to get a full pathname onto the clipboard, for use in MPW or whatever.
• Create text clipping files - If you have the Drag Manager extension (or System 7.5 or greater) you can create finder "clippings" of the text displayed in any cell by simply option dragging from the table and dropping in the Finder.  These clippings are openable in the Finder by simply double-clicking them.
• Resizeable Columns - The columns and table size and position may all be drag-adjusted and are remembered by the program.  Once caveat:  the size of the last column (Lock status) is not adjustable directly from the program.  Should you desire to change this parameter, open the Source Manager Prefs file with Resorcerer, open the resource called 'SMop', and find the parameter called "lockedColTitleWidth", and change it's value to whatever you like.  Default is 25.
• < >  - (a SourceServer-only feature) Angle brackets around the file status (i.e. <Read-Only>) denotes Branch revisions.  Although  Branch revisions can be either Modifiable or Read-Only or Modified-Read-Only, and you may have specified the table to only list, for example, Read-Only's, all branch revisions will be displayed in the table. The reasoning behind that is it's important to know which files are on a branch, because if you check in a branch thinking you're checking into the main trunk, your colleagues will not get your file (they get revisions from the main trunk unless they specifically check out a branch revision).  This has happened to me more than once.
• Drop more files - You can create new tables (if you're in Multi-table mode) or add files to the existing table (in Single-table mode) by drag-dropping some more files/folders onto SM's icon, or by using the File>Open... menu item.  You can close the whole table first if you like, and a new table will then be built when you drop or File>Open more files.
Drag Manager tip:  If you have the Drag Manager, you can add files to an existing table by dragging them from the finder and dropping them directly onto the table itself.  While dragging over the table, only the files area of the table will be highlighted, but you can actually drop it anywhere on the table, it doesn't matter.  After dropping, click the table to make SM active, and you'll see the newly added files.   
• Remove files from the list - To remove files from the list, just select them and hit the del key (or CMD-R).  To avoid the warning dialog, use option-del.  This command does not delete the file.  It just removes it from the list.  If you want to actually move the file to the trash, use the File>Delete Selected command instead.
• Delete files - To move a file to the trash, use the File>Delete Selected (CMD-D) command.  This removes it from the list and moves the actual file to the trash.  This can be pretty handy sometimes.
• Selection via typing - You can type ahead to scroll the list to the first line that has a file name starting with what you typed.