IRIS

Intelligent Roadway Information System

MULTI

MULTI is the MarkUp Language for Transportation Information used to compose DMS messages, as defined by the NTCIP 1203 standard. Messages in MULTI are ASCII strings, with formatting or other instructions denoted by tags inside square brackets. For example, the [nl] tag indicates a new line.

IRIS supports most tags when viewing sign messages:

Tag	Description	Supported
`[cb`x`]`	Message background color	Yes
`[pb`z`]` `[pb`r,g,b`]`	Page background color	Yes
`[cf]` `[cf`x`]` `[cf`r,g,b`]`	Foreground color	Yes
`[cr`x,y,w,h,z`]` `[cr`x,y,w,h,r,g,b`]`	Color rectangle	Yes
`[f`x,y`]`	Field data	No
`[flt`x`o`y`]` `[flo`y`t`x`]`	Flashing text	No
`[fo]` `[fo`x`]` `[fo`x,cccc`]`	Change font	Yes
`[g`n`]` `[g`n,x,y`]` `[g`n,x,y,cccc`]`	Place graphic	Yes
`[hc`n`]`	Hexadecimal character	No
`[jl]` `[jl`n`]`	Line justification	Yes
`[jp]` `[jp`n`]`	Page justification	Yes
`[ms`x,y`]`	Manufacturer specific	No
`[mv`…`]`	Moving text	No
`[nl]` `[nl`s`]`	New line	Yes
`[np]`	New page	Yes
`[pt`n`]` `[pt`n`o`f`]`	Page time	Yes
`[sc`x`]`	Character spacing	Yes
`[tr`x,y,w,h`]`	Text rectangle	Yes

Default Values

Some tags have default values, which will be used if a tag is not specified in a message.

Description	Default Value
Background color	0 (black)
Background color RGB	0, 0, 0 (black)
Foreground color	9 (amber)
Foreground color RGB	255, 208, 0 (amber)
Flash on time	0.0 s
Flash off time	0.0 s
Font	by sign config
Line justificaiton	3 (center)
Page justification	2 (top)
Page on time	2.8 s
Page off time	0.0 s
Character set	2 (eightBit)

Non-MULTI Tags

Additional non-MULTI tags are supported in specific contexts, interpreted by IRIS and replaced with dynamic values:

Action Tags, for use in scheduled device actions
Locator Tags, for incident DMS deployment