Reserved Words - You cannot create variables or labels named as any of the following words, but you may use part of the word in a name. i.e. Exponent is a legal name.
Abs Acos And Asc
Asin Atn Break ChDir
Chr Continue Cos Cwd
Dump End EndIf Erase
*Error Exp Exp10 Exp2
FClose FCloseAll FEof FGetc
FGets Fi FileExists FileLen
FindFirst FindNext FOpen For
FPutc FPuts FSeek FTell
Gosub Goto Hex If
*IIf Instr Int Kill
Label LCase Left Len
Log Log10 Log2 LTrim
Mid MkDir Mod Name
Next Not Or *On
Print Rem *Resume Return
Right RmDir RTrim Sgn
Sin Sqr Stop Str
Tan Trim UCase Val
Wend While
* denotes not implemented yet.