It seems like you're looking for information about GerbView 10.20, specifically regarding its features and compatibility.

Here are some key points I extracted from the text:

* GerbView is an advanced but easy-to-use application that allows users to view, print, and convert various formats such as:

+ Gerber

+ ODB++

+ Adobe PDF

+ Excellon

+ HPGL/2

+ Other formats (not specified)

* The software supports both RS-274D and RS-274X Gerber formats.

* Users can convert older Gerber files to the new RS-274X extended format.

As for compatibility, it appears that GerbView 10.20 is available for download as a portable application, which means it doesn't require installation on your device. You can simply download and run it directly from your computer or mobile device (as mentioned in the key).

If you're interested in downloading GerbView 10.20, I can provide you with a direct link or guide you through the process. Additionally, if you have any specific questions about the software's features or compatibility, feel free to ask!

For ipod instal GerbView 10.20