Elevation (File>Load GPX/LOC)
Use this option to have GSAK automatically update elevations after the GPX load. The possible values you can enter here are:
M - Update missing elevations only (that is, only update if the resolution field is blank)
A - Always update elevations (unless resolution is "user")
S - Show summary. Without the "S" the summary box will not be displayed. By itself does nothing - it must be appended to A or M.