NAME: occshowgrid PURPOSE: (one line only) Show a grid of postage stamp images from an occultation dataset DESCRIPTION: CATEGORY: Occultations CALLING SEQUENCE: occshowgrid,team,nx,ny,dw INPUTS: OPTIONAL INPUT PARAMETERS: KEYWORD INPUT PARAMETERS: HISIG - sigma level for upper stretch threshold (low is -3 sigma), (default = 5) ACTUAL - Flag, if set, use the D&R times (from chords.dat) to establish the reference time, otherwise just used the prediction (from crosstrack.dat). WINDOW - direct graphics window to use for display (default=0) SAVEPNG - Flag, if set, causes the display to be saved to a .png file. The file name will be [team]_grid.png. OUTPUTS: KEYWORD OUTPUT PARAMETERS: CONFIGURATION: COMMON BLOCKS: SIDE EFFECTS: RESTRICTIONS: PROCEDURE: MODIFICATION HISTORY: Written by Marc W. Buie, Southwest Research Institute, 2020/09/23