From Clomosy Docs
procedure ReadLn(var FileHandle TextFile; const Expression1 string);
It is a procedure used to read a line from a file.
You must open the file in read mode to read it. Reset
Example
var
file1 : TextFile;
{
if (clFileExists('file.txt'))
{
AssignFile(file1, 'file.txt');
Reset(file1);
while (not Eof(file1))
{
ReadLn(file1);
}
}
}