Keyboard

PSK Heard By is fully operable from the keyboard. The same list is in the app under Alt+H.

Move focus
Key	Goes to
`Alt`+`D`	Direction (who heard me / who I heard)
`Alt`+`C`	Callsign box
`Alt`+`B`	How far back
`Alt`+`U`	Update every (auto-refresh interval)
`Alt`+`T`	Results tree
`Alt`+`S`	Status line
`Tab` / `Shift`+`Tab`	Next / previous control

Actions
Key	Does
`Alt`+`K`	Check Now — fetch reception reports
`Enter` (in Callsign box)	Fetch reception reports
`Alt`+`L`	Open the Tree Layout dialog
`Alt`+`O`	Open Options
`Alt`+`H`	Show the keyboard shortcuts window
`F4`	Check for updates — open the update page in your browser

F4 opens the update page from anywhere in the window. When a drop-down list has focus, F4 keeps its normal job of opening that list.

In the results tree
Key	Does
`Up` / `Down`	Move between lines
`Right` / `Left`	Expand / collapse a branch
`Enter`	Show full detail for the selected station
`Home` / `End`	First / last visible line
Type a letter	Jump to the next line starting with it

In the Tree Layout dialog
Key	Does
`Space`	Check / uncheck the selected field
`Alt`+`U`	Move the selected field up one level
`Alt`+`D`	Move the selected field down one level
`Enter`	OK — apply the layout
`Escape`	Cancel

Dialogs (Options, Help, station detail)
Key	Does
`Enter`	OK / default button
`Escape`	Cancel / close
`Tab`	Move between controls
`Space`	Toggle the focused checkbox