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'''INKEY$''' returns a character if a key on the keyboard has been pressed, or null if nothing is pressed<br>
'''INT(''num'')''' returns the integer portion of ''num''<br>
'''INSTR(''startpos,search str,target str'')''' searches for the first string, in the target str. startpos is optional.<br>
'''JOYSTK(''num'')''' returns the position of the joystick axis (0-3) with a value from 0 to 63<br>
'''LEFT$(''str'',''num'')''' returns the first ("left") ''num'' characters of string ''str''<br>
'''LEN(''str'')''' returns the length (in characters) of string ''str''<br>
'''MEM''' returns the available free memory in bytes<br>
'''MID$(''str'',''start num'',''length num'')''' returns a sub-string of string ''str'' beginning at position ''start num'' and ''length num'' characters long. Can also reassign by adding ="newvalue"<br>
'''PEEK(''num'')''' returns the value of the memory ___location ''num'' (0-65535)<br>
'''POINT(''x num,y num'')''' returns the color of the semigraphics dot at position ''x numm'' (0-63) and ''y num'' (0-31)<br>
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