.BI expand( expression )
\- expands an expression
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-.BI find( expression ", " expression )
+.BI find( expression ", " pattern )
\- returns a list of all occurrences of a pattern in an expression
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.BI gcd( expression ", " expression )
\- greatest common divisor
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-.BI has( expression ", " expression )
-\- returns "1" if the first expression contains the second (which may contain wildcards) as a subexpression, "0" otherwise
+.BI has( expression ", " pattern )
+\- returns "1" if the first expression contains the pattern as a subexpression, "0" otherwise
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.BI inverse( matrix )
\- inverse of a matrix
.BI lsolve( equation-list ", " symbol-list )
\- solve system of linear equations
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+.BI map( expression ", " pattern )
+\- apply function to each operand; the function to be applied is specified as a pattern with the "$0" wildcard standing for the operands
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.BI match( expression ", " pattern )
\- check whether expression matches a pattern; returns a list of wildcard substitutions or "FAIL" if there is no match
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