Template:TTL defines the distance (in cells) that a weapon can travel (aka the distance from the firing point to the impact point [in 3D, so it makes a difference for targets in different altitudes]). It takes a positive floating point value as literal distance, and, starting with RA2, -2 as a special value.
Mind that this only applies to non-homing projectiles. Homing projectiles (those which have a positive Template:TTL value) can follow their targets all over the map, unless they are tagged as Template:TTL.
On SuperWeaponTypes
Specifies the radius (in cells) of the "area effect indicator" that is displayed when a player is targeting this Super Weapon. Note that this is just a visual effect, and doesn't actually influence the Super Weapon's area of effect.
On Sounds
Some sounds should be heard by players regardless of their current screen position ("Kirov reporting", for example), while other sounds should only be heard within a certain radius from their point of origin (Machinegun impact sound, for example). In the second case, the Range= in the sound's section defines that radius.
If you don't specify a Range= when a game is expecting it, it will default to the Range= value of the sound(md).ini's [Defaults] section.
See also the Type= and VShift= statements.
Special values
In
RA2/YR only,
Template:TTL is a special value indicating infinite range.
