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Add tests for :PRINTWIDTHLIMIT and :PRINTDEPTHLIMIT.

Fix a bug in the last "cosmetic" change. I had replaced some max logic with a call to min. That has been corrected and the print tests are now working again.

Cosmetic refactoring: rename a variable "wid" to "totalCharsToPrint" because having two variables named "width" and "wid" made the code difficult to read.

Note that I've made some improvements to the manual.

Explicitly state that PRINTWIDTHLIMIT is a variable. Otherwise, people might think that it's a procedure.

Add how PRINTWIDTHLIMIT affects printing words.

Explicitly state that PRINTDEPTHLIMIT is a variable. Otherwise, people might think that it's a procedure.

Partial fix for bug #1867803: Internationalize the special variable REDEFP.

Add a "pseudo-locale" which just translates all strings by prefixing the English version with "pseudo-". This will make internationalization testing easier.

Partial fix for bug #1867803: Internationalize the special variable STARTUP.

Add some logic for copying the input from the commander's input to the commander's history box. I also tried to add some of the logic for navigating through the commander's history with the arrow keys, but that doesn't work right (I can't seem to trap the key press events).