How to change image size when export charts?

When you use Chart.Export method to export a chart as an image to manage image size you have to work with 2 parameters: 1) resize chart image before calling export method, then call export, then restore original image size (i.e. it looks great in Excel but resolution too small when exported as image file, so you need to increase chart size, export it and restore the size) ...
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Excel too slow when formatting cells

My Excel 2010 was very slow when  formatting cells. I press right button, select Format Cell... and wait for an age while Format Cells window opening. Looks like Excel trying to do something with Default Printer driver when open Format Cells window. I've just changed my default printer from Adobe PDF to another PDF printer and that helped me! Thanks to Ed Ferrero from Mic...
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