Details on entering solutions and hints are at:
PGbasicmacros.pl and then click on: hints and solutions macros
If you want the same evaluation done on the solution text as is done between BEGIN_TEXT/END_TEXT
then use this format:
solution text goes here:
The END_SOLUTION must be on a line by itself, with no other characters on the line.
(In fact BEGIN_TEXT is just an abbreviation for:
See The problem text for details.
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