Aliases: diff_str
Keywords:
### ** Examples str1 <- "abcdefghijklmnopqrstuvwxyz" str2 <- "PREabcdefgMIDDLEnopqrstuvwxyzPOST" diff_str(str1, str2)
{+PRE+}abcdefg[-hijklm-]{+MIDDLE+}nopqrstuvwxyz{+POST+}