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tit:evalsubst
type:$type_both
alias:evalsubstit, evalsubstitute, evaluesubst, evaluesubstit, evaluesubstitute
syntax:!evalsubst ``name''=``val'' in ``expr''
mean:Manipulation of mathematical expressions: substitute variable ``name'' by ``val'' in ``expr'', \
then evaluate the expression to a real number. No regular expression is allowed in ``name''. <br>\
See also the commands\
$(ref1)cmdlist_mathsubst_&+cmd_choose=all$(ref2)cmdlist_mathsubst_">!mathsubst</a>,\
$(ref1)cmdlist_replace_&+cmd_choose=all$(ref2)cmdlist_replace_">!replace</a>.