Makes landscapes around these lines, no color tho, that has to be done manually with overlay and multiply layers
Use Thumbnail sizes (400 x 300, good for a quick preview until you get something amazing)
Balance (affects the contrast/brightness balance in one of the mid steps, can give a little more "crisp" to final product) Detail (detail values in the difference clouds)
Depth (gives the mountains some more rugidness)
A general purpose high-pass filter plugin. It shows up as Filters->Generic->High Pass Filter. You can select a blur radius that sets the size of detail to be passed by the filter, as well as an option to keep the source layer or replace it.
EDIT: Updated to use grain extract rather than the previous method, This looses less histogram data and is closer to the Photoshop version...
It actually implements 5 different high pass modes:
exposure-blend makes quick work of blending 3 bracketed exposures into a detailed, realistic, extended contrast image. It has many features to save you the drudgery of assembling contrast blended stacks yourself:
'watermark' by Doug Reynolds allows the user to add text as a watermark into an image. The watermark text is done as a lighter overlay of the background of the image. Besides the text itself, the user can choose the font from a pull-down menu, size (in pixels), location (one of the four corners), and opacity (in percent).
After installation the plugin script is availbe under the menu: Script-Fu/MyScripts/Watermark.