SCMP     MAC
         _ISSTR ]1
         _ISSTR ]2
         JSR   STRCMP
         <<<
SCAT     MAC
         _ISSTR ]1
         _ISSTR ]2
         LDA   ]3         ; MAX SIZE
         PHA
         JSR   STRCAT
         <<<
SPRN     MAC
         _ISLIT ]1
         JSR   PRNSTR
         <<<
SPOS     MAC
         _ISSTR ]1
         _ISSTR ]2
         JSR   SUBPOS
         <<<
SCPY     MAC
         _ISSTR ]1
         LDA   ]2         
         PHA
         LDA   ]3         
         PHA
         LDA   ]4         
         PHA
         JSR   SUBCOPY
         <<<
SDEL     MAC
         _ISLIT ]1
         LDA   ]2         
         PHA
         LDA   ]3         
         PHA
         JSR   SUBDEL
         <<<
SINS     MAC
         _ISLIT ]1
         LDA   ]2         
         PHA
         LDA   ]3         
         PHA
         _ISSTR ]4
         JSR   SUBINS
         <<<