5.8.10 Access to PARI/GP commands: pari

pari with a string as first argument (the PARI command name)
execute the corresponding PARI command with the remaining arguments.
For example pari("weber",1+i) executes the PARI command
weber with the argument 1+i.
 pari without argument exports all PARI/GP functions

with the same command name if they are not already defined inside Xcas
 with their original command name with the prefix pari_
For example, after calling pari(), pari_weber(1+i) or
weber(1+i) will execute the PARI command
weber with the argument 1+i.
The documentation of PARI/GP is available with the menu
Help>Manuals.