7.6) String Functions
| strcmp, strcmpi, strncmp | Compare two strings |
| strcat | Concatenate strings by row |
| strvcat | Concatenate strings by column |
| strncmp, strmatch | Used in logical statements to compare two strings |
| sprintf | Write formatted text to a string |
| blanks | Create a blank string |
| upper, lower | Change case of characters |
| deblank, strtrim | Remove blanks from strings |
| regexp, regexpi | Regular expression processing |