1expander notes:
2o   expander.tcl is an objectified version of the expansion algorithm
3    used in expand and Spinster.  Goals
4    -   Multiple expanders can be used at one time
5    -   Handling of batch or incremental input
6    -   Support for user-settable brackets
7    -   Support for context stack.
8o   Next: add and test incremental expansion.
9
10Things done: 11/23/2001
11x   Added the evalcmd command; this allows the application to specify
12    a different means of evaluating macros than the default "uplevel
13    #0".
14
15Things done: 11/3/2001
16x   Added a couple of more tests for the nested expander problem I
17    fixed the other day.
18x   Finished the man page for the current version.
19x   Time to zip it up and send it off to Andreas.
20
21Things done: 10/31/2001
22x   Updated the list of possible error modes to match the list in
23    Expand 2.1
24x   Added tests for each of the error modes to expander.test.
25x   Created a modified version of Expand 2.1 that uses expander; it
26    was able to process the Ex Libris website without error.
27x   Found an error: if an expander is used to expand text which
28    contains a call to another expander, the two get confused--because
29    of the "::expander::This" variable.
30    -   It works for the recordkeeper, because a recordkeeper method
31        can never execute a method for a different recordkeeper.
32    -   What if Methods saved the old This, and restored it at the
33        end?
34    -   Tried it; it works!  All existing tests pass.
35
36Things done: 10/30/2001
37x   Wrote more tests; found and fixed bracket restoration bug in expander.
38
39Things done: 10/25/2001
40x   Wrote tests for the lb, rb, and errmode commands.
41x   Added the reset command.
42x   Wrote tests for the reset command.
43x   Added the context stack commands, and wrote tests for them.
44    
45Things done: 10/24/2001
46x   Copied recordkeeper code and docs as a template.
47x   Implemented the lb, rb, and errmode accessor methods.
48