The SUMMON verb is mostly used in conjunction with certain magical spells to summon a specific creature or object.
Different types of manna bread with unique visual and flavor messaging can be summoned based on the caster's race and culture.
A ranger should first use sense outdoors to determine which animals are in the room, then prepare 630 and finally SUMMON <animal noun>. It is possible to use SUMMON without specifying the desired animal (and indeed, without sensing first), but this will result in a random animal being summoned forward and the ranger will have to wait 30 minutes before trying again if the ranger prefers a different animal.
Sorcerers may use summon to specify which demon they want. Using this method of summoning is more difficult than casting at a runestone.
>summon The following valences and demons may be summoned: grik'tyr grik'tyr-imp grik'tyr-grik shien'tyr shien'tyr-aishan shien'tyr-arashan shien'tyr-shien shien'tyr-darkling shien'tyr-shadowling lorae'tyr lorae'tyr-verlok lorae'tyr-igaesha lorae'tyr-grantris lorae'tyr-abyran lorae'tyr-abyran'a lorae'tyr-abyran'sa >summon shien'tyr-darkling You trace an arcane sigil in the air while incanting. Your eyes glow momentarily and you succeed in opening an interplanar rift from which you manage to pull a vaporous dusky blue darkling. Cast Roundtime 3 Seconds.
The format for this is SUMMON <herb>.
The chart with the appropriate lores can be found here.
Premium Home Pets
Premium members have the option of purchasing pets for their homes. You may only summon your pet from within a home.
To summon the pet to their home, the HOME PRIVACY FAMILIAR flag must be toggled on. Just type it until it says it's okay. Then SUMMON PET. (Do not try "SUMMON [animal]," as that will not work.)