QuoteRef: mumps ;;$PIECE (s,d,m [n]) substring of S bounded by m-1 occurrence of D and the n (default m) occurrence of D

QuoteRef: mumps ;;underscore for concatenation eg A _ B

QuoteRef: mumps ;;pattern searching A?B where B is a pattern specifier made up of numbers (0 for any), codes, or string literals; codes for all combinations of alphanumerics and punctuation

QuoteRef: mumps ;;uses naked reference (i.e. default all but last element) to force user into same disk block

QuoteRef: mumps ;;global variables -- sparse arrays on disk, siblings chained together with links to sons. use of an entry implies the path to get to the entry.