title: +STRING
description:

 +STRING  ( c-addr1 len1 c-addr2 len2 - c-addr2 len3 )
    Append the string at c-addr1, for len1 characters, to the end
    of the string at c-addr2, for len2 characters.  Return the
    beginning of the destination string (c-addr2) and the
    sum of the two lengths (len3).  It is the programmer's
    responsibility to ensure that there is room at the end
    of the destination string to hold both strings.
    An ambiguous condition exists if there's no room at the end
    of the destination string


status:
 standardized in OTA (Open Terminal Architecture)

description-as-in-OTA:

 +STRING  ( c-addr1 len1 c-addr2 len2 - c-addr2 len3 )
    Append the string at c-addr1, for len1 bytes, to the end
    of the string at c-addr2, for len2 bytes.  Return the
    beginning of the destination string (c-addr2) and the
    sum of the two lengths (len3).  It is the programmer's
    responsibility to ensure that there is room at the end
    of the destination string to hold both strings.