Program editing and control flow

• AUTOAUTO [start][,increment]
• CLEARCLEAR
• CONTCONT
• EDITEDIT line
• ELSEIF … THEN … ELSE …
• ENDEND
• FOR/NEXTFOR v=start TO limit [STEP step] … NEXT [v]
• GOSUBGOSUB line
• GOTOGOTO line
• IF/THENIF condition THEN line|statements [ELSE …]
• LISTLIST
• NEWNEW
• ONON n GOTO|GOSUB line[,line…]
• REMREM text or 'text
• RENUMRENUM [new],[old],[increment]
• RETURNRETURN
• RUNRUN
• STOPSTOP
• TRON/TROFFTRON · TROFF
• WHILE/WENDWHILE condition … WEND

Console input and output

• CLSCLS
• INKEYINKEY key code
• INKEY$INKEY$ key text
• INPUTINPUT var or INPUT #file,var…
• INPUT$INPUT$(n[, [#]file])
• LOCATELOCATE row,col
• POSPOS(x)
• PRINTPRINT [item] [sep item]…
• SPCSPC(n) in PRINT
• TABTAB(n) in PRINT
• WRITEWRITE [#n,] item[,item…]

Variables, data, and strings

• ASCASC(s$)
• CHR$CHR$(n)
• DATADATA item[,item…]
• DEF FNDEF FNname[(params)] = expression
• DIMDIM name(bound[,bound…])
• ERASEERASE name[,name…]
• HEX$HEX$(n)
• INSTRINSTR([start,] text$,find$)
• LCASE$LCASE$(s$)
• LEFT$LEFT$(s$,n)
• LENLEN(s$)
• LET[LET] var=expr
• MID$MID$(s$,start,length)
• OCT$OCT$(n)
• READREAD var[,var…]
• RESTORERESTORE [line]
• RIGHT$RIGHT$(s$,n)
• SPACE$SPACE$(n)
• STR$STR$(n)
• String variablesname$
• STRING$STRING$(n,code|text$)
• SWAPSWAP a,b
• UCASE$UCASE$(s$)
• VALVAL(s$)

Math, comparison, and logic

• ABSABS(x)
• Arithmetic operators+ − * / MOD
• ATNATN(x)
• Comparison operators= <> < > <= >=
• COSCOS(x)
• EXPEXP(x)
• FIXFIX(x)
• INTINT(x)
• LOGLOG(x)
• Logical operatorsNOT AND OR XOR EQV IMP
• RANDOMIZERANDOMIZE
• RNDRND
• SGNSGN(x)
• SINSIN(x)
• SQRSQR(x)
• TANTAN(x)

Graphics, screen, and color

• CIRCLECIRCLE (x,y),radius[,[color][,…]]
• COLORCOLOR foreground[,background]
• FILLFILL (x,y)[,color]
• GETGET (x1,y1)-(x2,y2),array
• GPRINTGPRINT x,y,print-list
• LINELINE (x1,y1)-(x2,y2)[,color][,B|BF]
• PAINTPAINT (x,y)[,fill[,border]]
• PALETTEPALETTE [index,color]
• PMAPPMAP(value,mode)
• POINTPOINT(x,y) or POINT(n)
• PRESETPRESET x,y[,color]
• PSETPSET x,y[,color]
• PUTPUT (x,y),array[,mode]
• RGBRGB(red,green,blue)
• SCREENSCREEN mode
• VIEWVIEW [[SCREEN] (x1,y1)-(x2,y2)[,…]]
• Color palette0–15
  0 Black8 Gray1 Blue9 Light Blue2 Green10 Light Green3 Cyan11 Light Cyan4 Red12 Light Red5 Magenta13 Light Magenta6 Brown14 Yellow7 Light Gray15 White

Sound and timing

• BEEPBEEP
• PAUSEPAUSE n
• PLAYPLAY string-expression
• SLEEPSLEEP n
• SOUNDSOUND frequency,duration
• TIMERTIMER seconds

Program and file storage

• CLOSECLOSE [[#]n[, [#]n…]]
• EOFEOF(n)
• FILESFILES
• KILLKILL "FILE"
• LOADLOAD "FILE"
• LOCLOC(n)
• LOFLOF(n)
• MERGEMERGE "FILE"
• NAMENAME "old" AS "new"
• OPENOPEN "name" FOR mode AS [#]n
• RESETRESET
• SAVESAVE "FILE"

System and device values

• BATTERYBATTERY percent
• DATE$DATE$ read/write
• FREFRE(x)
• GFONTHGFONTH
• GFONTWGFONTW
• GHEIGHTGHEIGHT
• GWIDTHGWIDTH
• TICKTICK milliseconds
• TIME$TIME$ read/write