In the pascal lang almost every commands ended with semicolon ;
except Begin or the end of the main program End.,it is ended with dot.
if you want to know a contetnt of a variable then you have to reference it by its name without apostrophe.
Look at this example:

Program commas_and_delimiters;

Var digit:Char;

Begin

digit:='#';

WriteLn(digit); {this line writes digit's contents,like #}

{if you want to write to the screen then do it by apostrophe}
WriteLn('Press enter to quit...');


{if you want to write to the screen and write the contents
of digit, detach them with comma}
WriteLn('The first character is ',digit);


{if you have another thought too,then detach with comma and
put the thoughts after that,of course between apostrophe}
WriteLn('The first character is ',digit,'.Guess it please');


{if you want to write to the screen four times
the contents of the reserved area by the compiler,called digit
,call its name detach them with comma}
WriteLn(digit,digit,digit,digit);


End.{end of main program}

I hope that you understood now