Weapons in Spring work quite similar to weapons in OTA. There are however some notable differences. Here is a breif summary of those changes:

• You can now use 16 weapons on a unit, instead of just 3.
• New weapon types. There are now some new weapon types, adding to the ability of the units.
• Slight script changes. While there is nothing drasitc, there are some differences. I do not know all of the differences, but you are bound to stumble across them yourself.

A description of all weapon.tdf tags can be found here (All variable names are case insensitive).

Many of the weapon propertiers work similar to OTA. But there are some cob-script changes to use the new weapons beyond 3, that are, instead of AimPrimary, FireSecondary, QueryTertairy and all that, it is now AimWeapon1, FireWeapon5, QueryWeapon2 etc.

Weapontypes existing in spring
Any weapons in spring must be one of the following types.
BeamLaser
BombDropper
Cannon
DGunWeapon
EmgCannon
FlameThrower
LargeBeamLaser
LaserCannon
LightingCannon
MissileLauncher
Shield
StarburstLauncher
TorpedoLauncher