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/usr/share/doc/calcurse/es/displacement.txt is in calcurse 4.0.0-1.

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The actual contents of the file can be viewed below.

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Displacement keys
=================

Move around inside calcurse screens.

The following scheme summarizes how to get around:

                               move up
                        move to previous week

                                 k K UP 
       move left                  ^  
 move to previous day             |
                      h H LFT 
                            <--   +  -->
                                           l L RGT 
                                  |            move right
                                  v         move to next day
                                 j J DWN 

                          move to next week
                              move down

Moreover, while inside the calendar panel, the '0' key moves to the first day
of the week, and the '$' key selects the last day of the week.