I proof read at work and I'm given everything in column layout PDF. I don't know much about PDF. I've discovered ways of navigating it to read by line/word/character, but I can't read in the correct order, some of the content is jumbled because of the columns being of unequal width etc. I also can't highlight areas of text that need adjusting, and I can't alter anything. The usual cut copy paste don't work, and nor can I select text to highlight. I haven't tried using mouse commands, as I don't usually use those, but am happy to give that a go if someone can advise me. I understand that not being able to edit the file might be because of the type of file, but my sighted colleagues can all highlight where correction is necessary and I can't.
Any help much appreciated.