PERT Help
PERT provides tools, handles, and commands to manipulate a PERT diagram.
A task is shown as a box with a line for the task's name, a line for
the task's duration, and a line for the task's earliest end time.
Only the task's name and its duration are editable. The end time
is calculated automatically by PERT.
Circular dependencies are shown in red.
Tools
The tool palette on the left offers several tools that either create
new figures or manipulate existing ones.
 | selects, moves or resizes a figure; the shift-key
toggles the selection. Dragging the selection tool in the background
selects the figures within the dragged rectangle.
|
 | creates a new task |
 | creates a new or edits an existing text figure |
 | creates or adjusts connections
between figures. A connection
is split into segments by dragging a point on the connection. To join two
segments click the
end point of a segment |
 | creates a line figure |
Handles
When selected figures offer different handles to manipulate them.
-
the blue circle handle is a connection handle. It allows to create connections
between figures.
-
the framed red handles are null handles. They only show the selection status
of a figure but don't support any manipulation.
-
the green handles are shown on connections. They enable to
reconnect them with another figure.
-
the yellow handle enables to change the font size of a text figure or the
size of the radius of a rounded rectangle.
Commands
Commands are invoked from the button bar at the bottom (applet) or
from the menu bar at the top (application).
The standard commands that are provided include, cut, copy, paste,
duplicate, delete, group, ungroup, bring to front, and send to back.
Attributes
Attributes, such as fill color, text color or arrow tip, can be changed
through the attributes menu (stand-alone) or the pop up menues (applet).