====== Jack patterns ======

A jack repeats note starts in the same column at short intervals. In the diagram, every tap returns to column 2.

^ Availability | Native Mania 4K and 7K style selection |
^ Documentation status | Current heuristic; illustration is schematic |
^ Behavior reference | v6.7.13 · reviewed 2026-10-04 |

===== Read the example =====
{{:images:patterns:jack_4k.png?640|Repeated taps down column 2. Earliest events are at the top; time increases downward.}}

Open the diagram to view the full-size image. These are original timelines, not screenshots of a real map. Column numbers are not keyboard bindings. The example is illustrative rather than a test of the entire-chart classifier.

===== What the analyzer measures =====
The analyzer examines consecutive starts within each column, their short intervals, the share of participating notes, and repeated-note runs. Notes in other columns can coexist with a jack run.

===== Choose this preference =====
<code>
.style jack
.jack
</code>
Use either form as an active player. The shared room’s future selections use the preference; already visible queue entries stay in place. Use ''.style'' or ''.map'' to inspect the current Mania chart and ''.pool'' for active filters.

===== Limitations =====
A fast single-note sequence can contribute to both Jack and Stream scores in the broad v1 classifier. A Jack label is not a promise that the entire chart stays in one column.

When strict fresh choices run out, [[wiki:style_fallback|style fallback]] can broaden the selection while keeping the active eligibility boundaries. Common spelling aliases remain supported; see [[commands:style|style syntax]].

===== Related articles =====
See [[wiki:pattern_atlas|the visual pattern atlas]], [[commands:jack|the command reference]], [[guides:mania_style_examples|practical style examples]], and [[wiki:mania_styles|style selection]].

===== Whole-chart qualification =====
The illustration explains the pattern, not an automatic admission test. Current native catalogs require a style score plus sustained/prominent feature evidence; a short passage or isolated event need not qualify the whole chart. See [[wiki:mania_styles|style selection]] and [[wiki:style_fallback|fallback]] for combinations and fresh-map tiers.