Domain/OS calls: swtu_$
swtu_$ == ??
- swtu_$addset
- swtu_$addstr
- swtu_$amatch
- swtu_$amove
- swtu_$cant
- swtu_$catsub
- swtu_$clower
- swtu_$create
- swtu_$ctoc
- swtu_$ctod
- swtu_$ctoi
- swtu_$cupper
- swtu_$dodash
- swtu_$dtoc
- swtu_$encode
- swtu_$equal
- swtu_$error
- swtu_$esc
- swtu_$filset
- swtu_$flush
- swtu_$fmtdat
- swtu_$fold
- swtu_$fopen
- swtu_$fputl
- swtu_$fxgetl
- swtu_$fxputl
- swtu_$gctoi
- swtu_$getarg
- swtu_$getccl
- swtu_$getch
- swtu_$geterr
- swtu_$getlin
- swtu_$gettyp
- swtu_$getwrd
- swtu_$gitoc
- swtu_$gltoc
- swtu_$index
- swtu_$itoc
- swtu_$length
- swtu_$lmatch
- swtu_$ltoc
- swtu_$makpat
- swtu_$maksub
- swtu_$match
- swtu_$mkuniq
- swtu_$open
- swtu_$print
- swtu_$prompt
- swtu_$putch
- swtu_$putlin
- swtu_$putstr
- swtu_$remove
- swtu_$rtoc
- swtu_$scopy
- swtu_$skipbl
- swtu_$spawn
- swtu_$stclos
- swtu_$stcopy
- swtu_$strcmp
- swtu_$type
- swtu_$upper
- swtu_$vtoc