F1 - opens help on wiki page on the active tab or importer.
Alt+q - Disable selected data points in the plot window.
Alt+a - Enable selected data points in the plot window.
Alt+# - Change the standard deviation for the selected data points in the plot window. # is a number from 1-9. E.g. Alt+1 adds 5% to the selected data points, Alt+2 adds 10% etc.
Delete - Delete the selected tree and node in the sounding tree.
Ctrl+h - Open the wiki help page.
Ctrl+o - Open a new project
Ctrl for multi select. Hold down Ctrl key when selecting either models or channels to plot them together.