Finally, let's check out how to update issues. To open the issue update form, you need to click on the Edit link, which is located in the top-right corner of the issue page (in the contextual menu). This will open the following form below the last history entry:
Most of the fields of this form should already be known to you. The missing text area for the Description field is hidden to save space and can be revealed by clicking on the Edit link (with the pen 
icon).
A new element in this form is the Notes box. As you can see, the text area inside this box supports Wiki formatting (like the one for the Description field). This is the text area where you can enter your comments on the issue. If the Private notes checkbox is checked, such comments will be visible only to those project members who have the View private notes permission.
When added, issue comments are rendered as history entries, as shown in the following screenshot:
Private comments have a red stripe to the left and are marked with the 
label.
Note the two icons to the right of each comment. The pen icon can be used to edit the comment (if you have the Edit own notes permission, of course), and the chat 
icon should be used if you want to quote it. By the way, quoting the issue description is also easy. To do this, you just need to click on the Quote link with the same icon that can be found to the right of the issue description.
But what if you need to make the same change to several issues?
Let's go back to the issue list. Right-click on any issue and you will see this contextual drop-down menu:
This menu provides you with a quick way of setting one value at a time for the Status, Tracker, Priority, Target version, Assignee, or % Done fields of several issues (you can select multiple issues in the list and then right-click on one of them).
If you need to change several fields of multiple issues at a time, you should use the Edit item of this contextual menu. This item activates the following bulk edit form:
