Default command aliases

dbxtra and dbXtra provide a set of default command aliases. They are:

 ----------------------------------
| Alias   |  dbXtra/dbxtra command|
|---------|-----------------------|
| c       |  cont                 |
| d       |  delete               |
| h       |  help                 |
| e       |  edit                 |
| l       |  list                 |
| n       |  next                 |
| p       |  print                |
| q       |  quit                 |
| r       |  run                  |
| rr      |  rerun                |
| s       |  step                 |
| st      |  stop                 |
| j       |  status               |
| t       |  where                |
| sc      |  screen               |
| noscreen|  screen off           |
| di      |  display              |
| ud      |  undisplay            |
| f       |  forward              |
| b       |  backward             |
| stopi   |  stop inst            |
| tracei  |  trace inst           |
| wheni   |  when inst            |
|---------|-----------------------|