The [S10] button on the main Softkey menu is Select. Pressing this button changes the softkeys to the following:

[S1] - If you want to select any fixtures that is on, choose Levels > 0%.
[S2] - Often, you may run a cue and notice the lights that came on had something wrong with them (i.e. wrong gobo or too bright etc.). To select these fixtures, choose Levels Going Up.
[S3] - Similar to Levels Going Up, you may want to select fixtures with Levels Going Down (maybe to adjust their Independent Timing)
[S4] - Selecting fixtures that currently have Captured Attributes is an easy way to grab everything you're currently working with.
[S5] - Use Select Attributes if you want to capture the Live values of a fixture that is currently being played back by either Cues or Looks. This is often handy if you are doing 'surgery' on cues. Start by first selecting the fixtures and then press Select Attributes to open the dialog box:
.jpg)
Note:
The Effects check box is disabled as Effects are owned by the cues, not the selected fixtures.
Check off the Attribute Families that you want to capture and select OK. The selected fixtures' attribute families will become captured at their current levels and they will be marked with a delta symbol, ready to be recorded. (Also check out the Record Options called Cue List State and All Levels (Block Cue). Sometimes those options may be more appropriate if you want to address all fixtures in the cue on-mass.)
[S6] - When discussing automated lighting looks, you often refer to fixtures by the state they are currently in. It would not be odd to hear: "Take all the blue dot gobos and make them stars." Using Select Using Palettes is the easiest way to select and alter these fixtures. The syntax is: [SELECT] [USING PALETTE] [BLUE] which will select the blue fixtures, then you would apply the [STARS] palette. Pressing Select Using Palettes opens a dialog box:

Select the desired palette and select OK to select fixtures using that palette Live.
Note:
If you have a Button Wing Panel, you can type [SELECT] [WING BUTTON] rather than pressing [SELECT] [USING PALETTE] and navigating this dialog box.
If you don't have a Button Wing Panel, you can easily change the Look Page combo list by repeatedly press [S1] to change the page or you can double press [S1] to get a pop up list of all your Look Pages
[S7] - Reserved
[S8] - The [Store] and Recall selection set is a useful places to temporally stuff a group of fixtures that you're currently working with. If you know you will be coming back, time and time again, to a selection of fixtures, press [SELECT] [SHIFT] [STORE]. Then when you want to get them back, press [SELECT] [RECALL].
[S9] - Typing a selection in the Command Line and pressing Odds will only select the odd numbered fixtures. For example, if you type [1] [THRU] [10] [SELECT] [ODD] you will end up with 1 + 3 + 5 + 7 + 9 selected. If no fixtures are selected and you select Odd, all the odd Captured fixtures will be selected. (If nothing is captured or selected, pressing Select Odd will do nothing.)
[S10] - Even works exactly like Odd does.
[S11] - If you have a number of fixtures Captured and some of them are Selected, choosing Invert will make the non-selected Captured fixture selected.
[S12] - While you are working on an idea, you may be juggling a number of different fixtures or fixture groups. The Select Previous button allows you to quickly grab the fixtures you were working with just before the ones you are working with now. Making adjustments, then pressing this button, then making adjustments and repeating will switch you between the last two selection sets ad infinitum. Alternately, you can press and hold [S12] to get a pop up list of the last ten selections:

When you get this list, [S1] through [S10] become the different selections. You can also use the mouse, the arrow keys or the wheel to select the desired fixtures in the list. Once you have highlighted the right line, press [ENTER].
See Also:
Selecting and Setting Fixtures