| More docs on the ARB website. See also index of helppages. Last update on 27. Jun 2017 .

Main topics:

- ARB: a Short Introduction
- ARB Manuals
- How to start ARB_EDIT4
- ARB_EDIT4 - Sequence primary and secondary structure editor

Related topics:

# ARB_EDIT4 F.A.Q.

- OCCURRENCE
- NOTES
- DESCRIPTION
- How to move around in ARB_EDIT4:

## OCCURRENCE

### General

## NOTES

### This file is no longer kept up to date.

### If you don't find an answer here move to http://arb-home.de/arb_edit.html.

## DESCRIPTION

### General Q & A on ARB_EDIT4

## How to move around in ARB_EDIT4:

### How to define the alignment detail visualized in the ARB_EDIT4 window?

Use the scroll bars:

- click on the triangles to move one position left/right or one line up/down.
- drag the "bar" while keeping the left mouse button pressed.
- click outside the "bar" to scroll page-wise

Use the middle mouse button:

- click inside the alignment, hold the button down and move the pointer

Use the mouse wheel:

- move pointer inside alignment and rotate the wheel (optionally with ALT/META)

### How to position the cursor:

to visualize the editor cursor, position the mouse cursor and press the left button (note: the cursor is placed between the sequences positions; counting is for the position next right to the cursor)
to move the editor cursor (it has to be placed somewhere before) to a given alignment position type a (position) number in one of the 'Position' (absolute alignment position - characters and gaps), 'E.coli' (homologous position in the E. coli standard), 'Base' (position in the current sequence - only characters, no gaps) or 'Helix #' (5'-end of 3' helix half; type a '-' for 5'-end of the 5' helix half) and move the mouse cursor back to the editing area of the ARB_EDIT4 window.
to move the editor cursor to the next character (gap symbols neglected) press the 'ctrl' and one of 'right', 'left', 'up' or 'down' keys.

### How to compress and uncompress groups?

click (left mouse button) on the triangle on the top of the group brackets

### How to move sequences?

ensure the move mode has been activated (by pressing the 'MOVE' button; upper most in the left panel of the ARB_EDIT4 window), position the mouse cursor