Phlegm originates from the lungs. It is different from the mucus that is produced in the nasal passages. A common cause of phlegm is post nasal drip which is a symptom of sinus infections, colds, flu and inhalation of irritants. The diagnosis of the underlying condition could be made from the color of the phlegm.
A flow chart is a type of diagram representing a process using different symbols containing information about steps or a sequence of events. Each of these symbols is linked with arrows to illustrate the flow direction of the process.
is an obvious misunderstanding which I would like to discuss further, discussing a flowchart as a counterpart of a state machine. Flowchart A flowchart is a visual means to show a sequence of some activities. It shows the sequence depending on conditions. Because the wording: sequence, activities and dependencies remind one of similar terms in state machines, flowcharts are sometimes mixed up with state machines. In other words some people do not see the true difference between the two. The confusion starts with the missing understanding of a state which is not known in a flowcharts. To make the matter clear let's first show a simple example. Flowcharts use a few basic symbols shown in Figure 1. Figure 1 Flow chart symbols: a). Start and End; b). Activity; c) Decision; d). Place