Q0
        Set up
                : svn export http://unbox.org/wisp/var/timm/10/310/src/st/3/b
                : svn add b
                : svn commit -m "3b ready to go"
                :
For each of the following questions, add lines like this to "run"
        printf "\n===== 3/b/q1 ========================\n\n"
        cat myGrammarFilesUsedInThisExample.rules
        cat myCodeThatAnswersThisQuestion.st
        execute
                : where "execute" is the "test" command shown below.

Q1
        Write
                : Port your science fiction grammar from Proj1 to this
				: Smalltalk system. Show you can generate 5 stories from 
				: this grammar.
        Test
                : |g| g := Grammar new. g file: 'scifi.rules'. 
				:     10 timesRepeat: [g generate. '' oo. ]. !
Q2	
		Write 
			: Add comment lines to the scifi rules. Comments begin with "#"
			: and are skipped by the grammar.
		Hint
			: TagBlank in Tag.st
		Test
            : |g| g:= Grammar new. g file: 'scifiWithComments.rules'. g  generate. !
			:
Q3 
		Write
			: Write a smalltalk program that prints out (one per line) all the 
			: right-hand-side "variables" (i.e. any right-hand symbol 
			: that starts with upper case) that are missing on the
			: left-hand-side.
		Hints:
			: st> 'Astring' first isUppercase.
			: true
			: st> #Asymbol first isUppercase.
			: true
        Test
            : |g| g:= Grammar new. g file: 'scifi.rules'. g badRight. !
Q4 
		Write
			: Write a smalltalk program that prints out (one per line) all the 
			: left "variables" that are missing on the right-hand-side
        Test
            : |g| g:= Grammar new. g file: 'scifi.rules'. g badRight. !