{names of external C routines to include in Pascal binarydemo program} function testeof(var f:bytefile):boolean; external; function testreadaccess(var a:UNIXfilename):boolean; external; function testwriteaccess(var a:UNIXfilename):boolean; external; function flength(var f:bytefile):integer; external; procedure movetobyte(var f:bytefile; n:integer); external;