change font size in PDF

I just downloaded and installed libreoffice. I have already hit a big snag. I opened a PDF file and the DRAW tool displayed all the text in the PDF file in such a small font that it makes it unuseable. How do I specify the text size for the whole PDF file ?

Are you sure it’s not a problem with view’s scale, text size should be same than in the pdf. Bottom-right to change it.

that did the trick. thanks. Now another different matter. Although DRAW can read PDF documents, after I make a change I can’t seem to save it as a PDF file (.ODG seems to be the only choice). Is there some way to save/export changed files as PDF ?

File -> Export... – or –
File -> Export As -> Export As PDF... – or –
File -> Export As -> Export Directly As PDF