RWPaint 2013.1 service pack 1
Multiple minor updates and bugfixes including:
Bzier deformation mode added to Transform tool.
Flip or mirror floating selection from context menu.
Image effect configuration windows use a different layout with configuration in a single column at the right side of the window.
Holding SHIFT while drawing with Pencil or Brush tools forces a straight line.
Pasting layer style applies the style to all selected layers.
Changing frame duration while multiple frames are selected sets the duration to those frames.
Use image in clipboard when filling with pattern.
Shrink/grow image mask by multiple pixels; bugfixes related to image masks.
Multiple bugfixes and enhancements related to vector images, text elements and shape outlines.
Speedups when editing images with a lot of layers and layer styles.
Customizable application name and splash screen.
And other fixes.
Since these are relatively minor fixes, the version number remained at 2013.1. Some of the enhancements were available before the SP1 release date and some will be delivered by automatic updates. Nevertheless, it is recommended to uninstall the current version and download this update and install it. After that, it is also recommended to reset configuration to experience all enhancements.

Портативная версия программы от производителя не требует инсталляции в систему и работает с любого USB носителя. Все данные и настройки хранятся в собственной папке AppData.