시스템변수
- HPOBJWARNING
- HPORIGIN
- HPORIGINMODE
- HPSCALE
- HPSEPARATE
- HPSPACE
- HPTRANSPARENCY
- IMAGEFRAME
- IMAGEHLT
- INSBASE
- INDEXCTL
- INSNAME
- INSUNITS
- INSUNITSDEFSOURCE
- INSUNITSDEFTARGET
- INTELLIGENTUPDATE
- ISAVEBAK
- ISAVEPERCENT
- LARGEOBJECTSUPPORT
- LASTANGLE
- LAYERDLGMODE
- LAYLOCKFADECTL
- LAYOUTREGENCTL
- LIMCHECK
- LIMMAX
- LIMMIN
- LOCALE
- LOCALROOTPREFIX
- LOCKUI
- LOGFILEMODE