I have downloaded Help file in PDF, but it cannot be opened (error in PDF file reported). Online file opening works OK. Tested with FoxitReader and Adobe Reader.
Please try to save pdf document after complete downloading. In alternative, open page http://www.okmap.org/en_download.asp and click with right mouse on pdf link and choose "Save object with name". Normally there was no problems.
I have downloaded Help file in PDF, but it cannot be opened (error in PDF file reported). Online file opening works OK. Tested with FoxitReader and Adobe Reader.
If you want to open and read the PDF, maybe you can have a pdf reader.i think it's helpful.