Contact sheet column spacing

[blackxacto]

On the attached contact sheet from XnViewerMP:
1. (set w no text spaces) How do I set less column spacing? the cols are too wide.
2. How do I determine how the spacing on any width dimension is going to form without making the contact sheet?
3. Is there a relation of images across to space required across?

[xnview]

do you use 'Fill mode'? The margins depends of number of rows/columns

[blackxacto]

I do not see the Fill Mode.

I don't see XnViewer Contact Sheet varying the black sides of the images to be positioned in the Contact Sheet. I do see the space between the black sides of the images, but the black sides to the images never adjusts. Does XnViewer keep the black sides of all images it adds the same? I wish I could delete the black sides to all images, then the contact sheet would fill accurately.

[xnview]

could you post a screenshot of contact sheet dialog?

[blackxacto]

Oh, gosh. I now see the fill check mark box. I saw it and thought it was for filling w color. Fill worked perfectly. Thank you for your patience, Pierre