U+1D102 MUSICAL SYMBOL FINAL BARLINE

U+1D102 was added to Unicode in version 3.1 (2001). It belongs to the block Musical Symbols in the Supplementary Multilingual Plane.

This character is a Other Symbol and is commonly used, that is, in no specific script.

The glyph is not a composition. It has a Neutral East Asian Width. In bidirectional context it acts as Left To Right and is not mirrored. In text U+1D102 behaves as Alphabetic regarding line breaks. It has type Other for sentence and Other for word breaks. The Grapheme Cluster Break is Any.

The Wikipedia has the following information about this codepoint:

In musical notation, a bar (or measure) is a segment of time corresponding to a specific number of beats in which each beat is represented by a particular note value and the boundaries of the bar are indicated by vertical bar lines. Dividing music into bars provides regular reference points to pinpoint locations within a piece of music. It also makes written music easier to follow, since each bar of staff symbols can be read and played as a batch. Typically, a piece consists of several bars of the same length, and in modern musical notation the number of beats in each bar is specified at the beginning of the score by the top number of a time signature (such as 3/4), while the bottom number indicates the note value of the beat (the beat has a quarter note value in the 3/4 example). Bar measure is when you have 8 Beats in one rest.

The word bar is more common in British English, and the word measure is more common in American English, although musicians generally understand both usages. In American English, although the words bar and measure are often used interchangeably, the correct use of the word 'bar' refers only to the vertical line itself, while the word 'measure' refers to the beats contained between bars. In international usage, it is equally correct to speak of bar numbers and measure numbers, e.g. ‘bars 9–16’ or ‘mm. 9–16’. Along the same lines, it is wise to reserve the abbreviated form ‘bb. 3–4’ etc. for beats only; bars should be referred to by name in full.

The first metrically complete measure within a piece of music is called ‘bar 1’ or ‘m. 1’. When the piece begins with an anacrusis (an incomplete measure at the head of a piece of music), ‘bar 1’ or ‘m. 1’ is the following measure.