Getting particles to come out of my objects towards someone I pick.

I can't get the syntax right to make my object spew particles at a person of my choosing.

This is greek to me:

I'm trying to go by the wiki, but the wiki is obviously written for programmers, which I am not.

"Parameter pairs (always one constant followed by parameter of specified type):"

"PSYS_PART_FLAGS followed by an integer bitfield with one or more of the following constants OR'ed together:"

Yeah.

Can someone lend a hand, please?

Yesh.

//Subroutines
 start_particles(key target)
 {
 	llParticleSystem([
 	PSYS_PART_FLAGS, PSYS_PART_EMISSIVE_MASK | PSYS_PART_TARGET_POS_MASK | PSYS_PART_INTERP_COLOR_MASK | PSYS_PART_INTERP_SCALE_MASK | PSYS_PART_FOLLOW_VELOCITY_MASK | PSYS_PART_FOLLOW_SRC_MASK,
 	PSYS_SRC_PATTERN, PSYS_SRC_PATTERN_EXPLODE,
 	PSYS_PART_START_SCALE, <0.15, 0.15, 0>,
 	PSYS_PART_END_SCALE, <0.25, 0.25, 0>,
 	PSYS_PART_START_ALPHA, 1.0,
 	PSYS_PART_END_ALPHA, 1.0,
 	PSYS_PART_START_COLOR, <0,0,1>,
 	PSYS_PART_END_COLOR, <1,0,0>,
 	PSYS_PART_MAX_AGE, 5.0,
 	PSYS_SRC_BURST_RATE, 0.1,
 	PSYS_SRC_BURST_PART_COUNT, 1,
 	PSYS_SRC_BURST_RADIUS, 0.1,
 	PSYS_SRC_BURST_SPEED_MAX, 0.02,
 	PSYS_SRC_BURST_SPEED_MIN, 0.01,
 	PSYS_SRC_TARGET_KEY, target
 	]);
 }

Sends a stream from the prim to target.
I broke up the list into the "pairs" mentioned in the Wiki, easier to read.

Also, because someone is bound to ask about it...

In that example, 'target' is a key, a UUID for someone's avatar, preumably. If you are wanting to spit out particles at a particular person, on command, you are going to need some way of getting that target's key.

Such as this : http://secondlife.com/badgeo/wakka.php?wakka=sensors.

The llSensor function (and related event, sensor) allow you to search around an area you specify, and get the names, keys, and positions of various things (objects, avatars, up to 16 at a time). Using a sensor, you can easily get the key of an avatar you are searching for.