\begin{definition}[Definition:Flow Chart]
A '''flow chart''' is a graphical depiction of an algorithm in which the steps are depicted in the form of boxes connected together by arrows.
Conventionally, the shape of the box representing a step is dependent upon the type of operation encapsulated within the step:
:Rectangular for an action
:A different shape, conventionally a diamond, for a condition.
On {{ProofWiki}}, the preferred shape for condition boxes is rectangular with rounded corners.  This is to maximise ease and neatness of presentation: configuring a description inside a diamond shaped boxes in order for it to be aesthetically pleasing can be challenging and tedious.
Also on {{ProofWiki}}, it is part of the accepted style to implement the start and end points of the algorithm using a box of a particular style, in this case with a double border.
\end{definition}