title: delete char from binary file
body: <p>I want to delete a char/string from a binary/text file. If I know the position of the char/string from the file, how can I delete it? Should I read the file (BlockRead), remove the char/string (with Delete(source, startPos, endPos) and then write (BlockWrite) to a new file or I can delete directly from the specified file?</p>
  
  <p>thanks </p>