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	menu bar
the menu bar allows you to select from five menus: file, edit, settings, window and help.
items in italic don't appear in basic mode and are only available in advanced mode.
file
- 
new...: creates a new song.
 - 
open...: opens the file picker, allowing you to select a song to open.
- see file formats for a list of formats Furnace is able to open.
 
 - 
open recent: contains a list of the songs you've opened before.
- clear history: erases the file history.
 
 - 
save: saves the current song.
- opens the file picker if this is a new song, or a backup.
 
 - 
save as...: opens the file picker, allowing you to save the song under a different name.
 - 
export: allows you to export your song into other formats, such as audio files, VGM and more. see the export page for more information.
 - 
manage chips: opens the Chip Manager dialog.
 - 
restore backup: restores a previously saved backup.
- Furnace keeps up to 5 backups of a song.
 - the backup directory is located in:
- Windows: 
%USERPROFILE%\AppData\Roaming\furnace\backups - macOS: 
~/Library/Application Support/Furnace/backups - Linux/other: 
~/.config/furnace/backups 
 - Windows: 
 - this directory grows in size as you use Furnace. remember to delete old backups periodically to save space.
 - do NOT rely on the backup system as auto-save! you should save a restored backup because Furnace will not save backups of backups.
 
 - 
exit: closes Furnace.
 
edit
- 
...: does nothing except prevent accidental clicks on later menu items if the menu is too tall to fit on the program window.
 - 
undo: reverts the last action.
 - 
redo: repeats what you undid previously.
 - 
cut: moves the current selection in the pattern view to clipboard.
 - 
copy: copies the current selection in the pattern view to clipboard.
 - 
paste: inserts the clipboard's contents in the cursor position.
- you may be able to paste from OpenMPT as well.
 
 - 
paste special...: variants of the paste feature.
- paste mix: inserts the clipboard's contents in the cursor position, but does not erase the occupied region.
 - paste mix (background): does the same thing as paste mix, but doesn't alter content which is already there.
 - paste with ins (foreground): same thing as paste mix, but changes the instrument.
 - paste with ins (background): same thing as paste mix (background), but changes the instrument.
 - paste flood: inserts the clipboard's contents in the cursor position, and repeats until it hits the end of a pattern.
 - paste overflow: paste, but it will keep pasting even if it runs over another pattern.
 
 - 
delete: clears the contents in the selection.
 - 
select all: changes the selection so it covers a larger area.
- if the selection is wide, it will select the rows in a column.
 - if the selection is tall, it will select the entire column.
 - if a column is already selected, it will select the entire channel.
 - if a channel is already selected, it will select the entire pattern.
 
 - 
operation mask: toggles which columns will be affected by the listed operations. more information here.
 - 
input latch: determines which data are placed along with a note. more information here.
 - 
note/octave up/down: transposes notes in the current selection.
 - 
values up/down: changes values in the current selection by ±1 or ±16.
 - 
transpose: transpose notes or change values by a specific amount.
 - 
interpolate: fills in gaps in the selection by interpolation between values.
 - 
change instrument: changes the instrument number in a selection.
 - 
gradient/fade: replace the selection with a "gradient" that goes from the beginning of the selection to the end.
- does not affect the note column.
 - Nibble mode: when enabled, the fade will be per-nibble (0 to F) rather than per-value (00 to FF).
- use for effects like 
04xy(vibrato). 
 - use for effects like 
 
 - 
scale: scales values in the selection by a specific amount.
- use to change volume in a selection for example.
 
 - 
randomize: replaces the selection with random values.
- does not affect the note column.
 
 - 
invert values:
00becomesFF,01becomesFE,02becomesFDand so on. - 
flip selection: flips the selection so it is backwards.
 - 
collapse/expand amount: allows you to specify how much to collapse/expand in the next two menu items.
 - 
collapse: shrinks the selected contents.
 - 
expand: expands the selected contents.
 - 
collapse pattern: same as collapse, but affects the entire pattern.
 - 
expand pattern: same as expand, but affects the entire pattern.
 - 
collapse song: same as collapse, but affects the entire song.
- it also changes speeds and pattern length to compensate.
 
 - 
expand song: same as expand, but affects the entire song.
- it also changes speeds and pattern length to compensate.
 
 - 
find/replace: shows the Find/Replace window.
 - 
clear: opens a window that allows you to mass-delete things like songs, unused instruments, and the like.
 
settings
- full screen: expands the Furnace window so it covers your screen.
 - lock layout: prevents you from dragging/resizing docked windows, or docking more.
 - basic mode: toggles Basic Mode.
 - visualizer: toggles pattern view particle effects when the song plays.
 - reset layout: resets the workspace to its defaults.
 - settings...: shows the Settings window. these are detailed in [settings.md].
 
window
all these menu items show or hide their associated windows.
help
- effect list: displays the effect list.
 - debug menu: this menu contains various debug utilities.
- unless you are working with the Furnace codebase, it's not useful.
 
 - inspector: this option shows the Dear ImGui Metrics/Debugger window.
- unless you are working with the Furnace codebase, it's not useful.
 
 - panic: this resets all chips while the song is playing, effectively silencing everything.
 - about...: displays the About screen.
 
at the end of the menu bar, more information may be shown:
- during editing, information about the data under the cursor will be shown here:
- note or note modifier.
 - instrument number and name.
 - volume in decimal, hex, and percentage.
 - effect type and description.
 
 - during playback, these values will be displayed:
speed/groove @ tick rate (BPM) | order | row | elapsed time
 - if any changes or edits have been made but not yet saved, "modified" will appear.