String Operations

Substring Replacement:

$ vbl[start,length] = string

Example:

$ nam := hydrichlor

$ nam[4,1] := o

$ show symbol nam

NAM = “HYDROCHLOR”

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Substrings within a longer string can be replaced. The starting position and the length of replacement (in bytes) are indicated within the square brackets following the name of the target string. The colon-equal operator (“:=“)or the colon-equal-equal operator (“:==“) MUST be used for this type of assignment.

The example illustrates replacing a single character near the middle of a string.