isoconvert settings

Can someone tell me what the image resolution does?

IsoConvert Preferences File 7.3

# Comment lines start with the character '#'

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Image Resolution: 300

Use CGM VDC Extent: 1

# Delete Masked Elements reduces file size for publishing purposes by deleting all the elements that are hidden by Masks.

Delete Masked Elements: 1

Use Anti-Aliasing: 1