By default, the description of a room is printed every time the player enters a room.

On a device with very limited screen space, however, we might wish to supplant that behavior with "brief" descriptions. In Brief mode, Inform prints room descriptions only when the player enters that room for the first time. Afterwards, the text is skipped, for brevity, though the player can see it again at any time by typing LOOK.

As we saw in the previous chapter, we can set "use options" to control certain aspects of the player's experience. One of the use options is the option to

Use brief room descriptions.

which changes the defaults so that the description of a room is printed only the first time the player enters.

"Verbosity"

Use brief room descriptions.

The Wilkie Memorial Research Wing is a room. "The research wing was built onto the science building in 1967, when the college's finances were good but its aesthetic standards at a local minimum. A dull brown corridor recedes both north and south; drab olive doors open onto the laboratories of individual faculty members. The twitchy fluorescent lighting makes the whole thing flicker, as though it might wink out of existence at any moment.

The Men's Restroom is immediately west of this point."

The Men's Restroom is west of the Research Wing. "Well, yes, you really shouldn't be in here. But the nearest women's room is on the other side of the building, and at this hour you have the labs mostly to yourself. All the same, you try not to read any of the things scrawled over the urinals which might have been intended in confidence."

Test me with "west / east".

If we type "test me" during play, these commands will be carried out automatically, and we can see that when we return to the Research Wing, the description is not given a second time.

Some notes: the player can also turn full-length descriptions on or off with the commands "verbose" and "brief", or set a minimal-description setting with the command "superbrief". This power still belongs to the player even if we have set the use option to show brief room descriptions by default.

Moreover, we can ourselves check what the state of the descriptions is, with

if set to sometimes abbreviated room descriptions: ...
if set to unabbreviated room descriptions: ...
if set to abbreviated room descriptions: ...

Finally, it is possible to exercise more precise control over what the player sees on his first and subsequent visits to a room; see the next example for details.

Suppose that we want the player always to see full room descriptions, even if he tries to reset the defaults -- perhaps because there is vital information there which he will miss if he turns off full-length room descriptions.

To do this, we might want to remove the standard behavior of the three actions associated with BRIEF, SUPERBRIEF, and VERBOSE, replacing them with explanatory messages about how the game behaves. We cannot use Instead to override these actions, because Instead rules do not apply to actions out of world. Instead, we will want to remove and replace the carry out rules.

We can do this easily by going to the Actions Index, looking up the detail panel for, say, "preferring abbreviated room descriptions", and click the "unlist" button to paste in the sentence that will remove this rule from the rulebook.

Let's remove all three of the carry out rules and substitute our own:

"Verbosity 2"

Section 1 - Procedure

The prefer unabbreviated room descriptions rule is not listed in the carry out preferring unabbreviated room descriptions rulebook.

The prefer sometimes abbreviated room descriptions rule is not listed in the carry out preferring sometimes abbreviated room descriptions rulebook.

The prefer abbreviated room descriptions rule is not listed in the carry out preferring abbreviated room descriptions rulebook.

Carry out preferring unabbreviated room descriptions:
    say "[story title] always provides full-length descriptions for your reading pleasure."

Carry out preferring sometimes abbreviated room descriptions:
    say "For your playing protection, [story title] provides only full-length room descriptions."

Carry out preferring abbreviated room descriptions:
    try preferring sometimes abbreviated room descriptions instead.

The standard report preferring abbreviated room descriptions rule is not listed in the report preferring abbreviated room descriptions rulebook.

The standard report preferring unabbreviated room descriptions rule is not listed in the report preferring unabbreviated room descriptions rulebook.

The standard report preferring sometimes abbreviated room descriptions rule is not listed in the report preferring sometimes abbreviated room descriptions rulebook.

Use full-length room descriptions.

Section 2 - Scenario

The Wilkie Memorial Research Wing is a room. "The research wing was built onto the science building in 1967, when the college's finances were good but its aesthetic standards at a local minimum. A dull brown corridor recedes both north and south; drab olive doors open onto the laboratories of individual faculty members. The twitchy fluorescent lighting makes the whole thing flicker, as though it might wink out of existence at any moment.

The Men's Restroom is immediately west of this point."

The Men's Restroom is west of the Research Wing. "Well, yes, you really shouldn't be in here. But the nearest women's room is on the other side of the building, and at this hour you have the labs mostly to yourself. All the same, you try not to read any of the things scrawled over the urinals which might have been intended in confidence."

Test me with "west / east / brief / w / e / superbrief / w / e / verbose".