## VARS

# symbol entry
'test'
-> stack size should be 1
-> stack should be 'test'
erase

# symbol entry (2)
'test
-> stack size should be 1
-> stack should be 'test'
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# symbol entry (3)
''
-> stack size should be 1
-> stack should be ''
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# symbol entry (4)
'
-> stack size should be 1
-> stack should be ''
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# sto (1)
1 'a' sto
-> stack size should be 0
'a' a
-> stack should be 'a', 1
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# sto (2)
2 'a' sto a
-> stack should be 2
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# rcl (1)
'a' rcl
-> stack should be 2
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# rcl (2)
'b' rcl
-> error should be 5
-> stack should be 'b'
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# sto in prog then rcl
3 << 'r' sto >> eval r 'r' rcl
-> stack should be 3, 3
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# purge (1)
a 'a' purge a
-> stack should be 2, 'a'
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# purge (2)
'a' purge
-> error should be 5
-> stack size should be 0
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# sto+ (1)
8 'a' sto
2 'a' sto+
a
-> stack should be 10
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# sto+ (2)
2 'a' sto
'a' 2 sto+
a
-> stack should be 4
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# sto+ (3)
'a' sto+
-> stack size should be 1
-> error should be 2
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# sto- (1)
2 'a' sto
2 'a' sto-
a
-> stack should be 0
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# sto- (2)
2 'a' sto
'a' 2 sto-
a
-> stack should be 0
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# sto- (3)
'a' sto-
-> stack size should be 1
-> error should be 2
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# sto* (1)
2 'a' sto
3 'a' sto*
a
-> stack should be 6
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# sto* (2)
2 'a' sto
'a' 3 sto*
a
-> stack should be 6
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# sto* (3)
'a' sto*
-> stack size should be 1
-> error should be 2
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# sto/ (1)
2 'a' sto
6 'a' sto/
a
-> stack should be 3
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# sto/ (2)
6 'a' sto
'a' 2 sto/
a
-> stack should be 3
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# sto/ (2)
'a' sto/
-> stack size should be 1
-> error should be 2
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# sneg (1)
7 'a' sto
'a' sneg
a
-> stack should be -7
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# sneg (2)
sneg
-> error should be 2
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# sinv (1)
4 'a' sto
'a' sneg
a
-> stack should be 0.25
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# sinv (2)
sinv
-> error should be 2
erase