Unused timing lines

When placing uninherited lines on-beat with the previous uninherited line, timing may shift 1 ms forwards due to rounding errors. This means after 20 uninherited lines placed in this way, timing may shift up to 20 ms at the end. They may also affect the nightcore mod and main menu pulsing depending on placement.

Unused inherited lines don't cause any issues and are basically equivalent to bookmarks. Unless the mapper intended to do something with them (e.g. silencing slider ends/ticks), they can be safely removed, but removal is not necessary.

Outcomes

Problem
timestamp - Uninherited line changes nothing.
Cause: An uninherited line is placed on a multiple of 4 downbeats away from the previous uninherited line, and changes no settings.

Problem Can Be Replaced By Inherited
timestamp - Uninherited line changes nothing that can't be changed with an inherited line.
Cause: Same as the first check, but changes volume, sampleset, or another setting that an inherited line could change instead.

Warning
timestamp - Uninherited line only something not immediately obvious, ensure this makes sense, otherwise remove the line.
Cause: Same as the first check, but changes something that inherited lines cannot, yet isn't immediately obvious, i.e. omitting barline, correcting an omitted barline, or nightcore cymbals.

Warning Can Be Replaced By Inherited
timestamp - Uninherited line only something not immediately obvious, ensure this makes sense, otherwise replace with an inherited line
Cause: Same as the second check, but changes something that inherited lines cannot, yet isn't immediately obvious, i.e. omitting barline, correcting an omitted barline, or nightcore cymbals.

Minor Inherited
timestamp - Inherited line changes nothing(, other than SV/sample settings, but affects nothing).
Cause: An inherited line changes no settings.

Unsnapped kiai Wrongly or inconsistently snapped hit objects

Table of contents

Unused timing lines

Purpose

Reasoning

Outcomes