Examples follow.
Piercing Strike
Piercing Strike is a weapon action available to characters proficient in and wielding a dagger, pike, rapier, shortsword, and trident in their main hand.
Description
Stab an enemy and possibly inflict Gaping Wounds. Undead and Constructs can't suffer Gaping Wounds.
Properties
Action
Damage:
Normal Weapon Damage
Attack roll
Range: Normal weapon range
Recharge: Short rest
Conditions
Duration: 2 turns
- Attacks against this creature deal an additional 2
Piercing damage. - Removed by healing.
Pommel Strike
Pommel Strike is a weapon action available to characters proficient in and wielding a longsword in their main hand.
Description
Blah blah blah blah
Properties
Bonus action
Damage:
1d4 (1~4) + Strength modifier 
Bludgeoning - Attack roll
Melee: 1.5 m / 5 ft
Brace (Melee)
Brace (Melee) is a weapon action available to characters proficient in and wielding a halberd, and pike in their main hand.
Description
Blah blah blah blah
Properties
6 m / 20 ft movement
Tenacity
Tenacity is a weapon action available to characters proficient in and wielding a mace, and maul in their main hand.
Description
Blah blah blah blah
Properties
This template defines the table "weapon_actions". This table has not been created yet.