How does that pesky dressing room work? It's all piled into a single spot script. Here's the version currently in use at The UnPalace. It has components in the ENTER, INCHAT, and OUTCHAT sections... see the notes after the code to enhance your understanding.

; In the ENTER section, ; we give each new entrant instructions, and reset the room if it was ; previously empty. ON ENTER { ; Give each entrant instructions { "To dress someone, whisper \"dressup\"" STATUSMSG } 60 ALARMEXEC { "To avoid BEING dressed, say \"nodress\"" STATUSMSG } 120 ALARMEXEC { "To undo \"nodress,\" type \"redress\"" STATUSMSG } 180 ALARMEXEC { ; special instructions for wizards { "\"halt\" and \"resume\" for entire room" STATUSMSG } 220 ALARMEXEC } ISWIZARD IF { "Reminder: ALL BEDROOMS here have the dressup script," LOGMSG "just in case you want a lockable dressup room." LOGMSG } 250 ALARMEXEC ; reset the room { 0 ME SETSPOTSTATE CLEARLOOSEPROPS } NBRROOMUSERS 1 == IF } ; In the OUTCHAT block, we handle all user commands, including ones for the local wizard ; to halt the dressup code if things are getting out of hand. ON OUTCHAT { nodressup GLOBAL ; Strip off any leading @ positions (spoofing) { "$1" GREPSUB cmd = } { CHATSTR cmd = } CHATSTR "^@[0-9]*,[0-9]* (.*)" GREPSTR IFELSE ; Turn off dressup for me only { 1 nodressup = "No Dressup for You" STATUSMSG "" CHATSTR = } cmd "^nodress" GREPSTR IF ; Turn on dressup for me only { 0 nodressup = "Now You Can Be Dressed" STATUSMSG "" CHATSTR = } cmd "^redress" GREPSTR IF ; Try to dressup your friend { { NBRUSERPROPS n = { 0 i = ";pp" { " " i USERPROP ITOA & & i ++ } { i n < } WHILE WHOTARGET PRIVATEMSG } n IF } { "you have to whisper it" STATUSMSG } WHOTARGET IFELSE ; Make sure it's mutual 0 nodressup = "" CHATSTR = } cmd "dressup" == IF { NAKED "" CHATSTR = } cmd "^undress" GREPSTR IF ; repeat insructions { "To dress someone, whisper \"dressup\"" STATUSMSG { "To avoid BEING dressed, say \"nodress\"" STATUSMSG } 60 ALARMEXEC { "To undo \"nodress,\" type \"redress\"" STATUSMSG } 120 ALARMEXEC { "Whisper to only be dressed by your friend" STATUSMSG } 180 ALARMEXEC { { "\"halt\" and \"resume\" for entire room" STATUSMSG } 220 ALARMEXEC } ISWIZARD IF "" CHATSTR = } cmd LOWERCASE "^help" GREPSTR IF ; Special wizard commands { 1 ME SETSPOTSTATE "Dressups Halted" STATUSMSG "" CHATSTR = } ISWIZARD cmd "halt" == AND IF { 0 ME SETSPOTSTATE "Dressups Resumed" STATUSMSG "" CHATSTR = } ISWIZARD cmd "resume" == AND IF } ; The INCHAT block does the ; actual dressing. ON INCHAT { nodressup GLOBAL ; Reset some rare crash conditions { 0 ME SETSPOTSTATE } ME GETSPOTSTATE NBRROOMUSERS 2 < AND IF ; Dressup Receiver { { "[ " "$1" GREPSUB & " ] SETPROPS" & STRTOATOM EXEC } { "Sorry you can't dress me up" WHOCHAT PRIVATEMSG } nodressup NOT WHOTARGET NOT WHOTARGET WHOCHAT == OR AND ME GETSPOTSTATE NOT AND IFELSE } CHATSTR ";pp (-*[-0-9 ]*)$" GREPSTR WHOCHAT WHOME == NOT AND IF }

Dressup is (IMHO) a good example of how to use several different tricks to achieve a single result. The less-than-obvious tricks it uses are:

• Prop IDs
  The loop in the OUTCHAT block builds up a list of prop IDs without removing the props. Prop IDs almost never collide, so the script isn't dependant on prop names, which often give unpredictable results.
• STRTOATOM
  The string of prop IDs from one users' OUTCHAT is simply expanded, wrapped in an array, and executed by their friend's INCHAT block as iptscrae code. A restrictive GREPSTR blocks any iptscrae "surprises."
• WHOTARGET
WHOTARGET is used extensively by both the dresser and dressed. When WHOTARGET is nonzero, the user has someone actively clicked for whispering this makes it easy for two friends to busily exchange props without being surprised by others in the same room trying to use the script on them at the same time.
• SETSPOTSTATE
  By using the spot state, which is invisibly shared by all users, a wizard can quickly halt dressup activity if things are getting out of hand (flooding, offensive props, whatever your criteria for "out of hand" might be).
• Online Help
  Okay, it's not a "trick" per se, but supplying help in a room script is something that's often overlooked. Here, every user is given a short help message whenever they enter the room and they can always just type "help" to review it again.