<P> In addition, many diagram techniques are similar to flowcharts but carry a different name, such as UML activity diagrams . </P> <P> The American National Standards Institute (ANSI) set standards for flowcharts and their symbols in the 1960s . The International Organization for Standardization (ISO) adopted the ANSI symbols in 1970 . The current standard was revised in 1985 . Generally, flowcharts flow from top to bottom and left to right . </P> <Table> <Tr> <Th> ANSI / ISO Shape </Th> <Th> Name </Th> <Th> Description </Th> </Tr> <Tr> <Td> </Td> <Td> Flowline (Arrowhead) </Td> <Td> Shows the process's order of operation . A line coming from one symbol and pointing at another . Arrowheads are added if the flow is not the standard top - to - bottom, left - to right . </Td> </Tr> <Tr> <Td> </Td> <Td> Terminal </Td> <Td> Indicates the beginning and ending of a program or sub-process . Represented as a stadium, oval or rounded (fillet) rectangle . They usually contain the word "Start" or "End", or another phrase signaling the start or end of a process, such as "submit inquiry" or "receive product". </Td> </Tr> <Tr> <Td> </Td> <Td> Process </Td> <Td> Represents a set of operations that changes value, form, or location of data . Represented as a rectangle . </Td> </Tr> <Tr> <Td> </Td> <Td> Decision </Td> <Td> Shows a conditional operation that determines which one of the two paths the program will take . The operation is commonly a yes / no question or true / false test . Represented as a diamond (rhombus). </Td> </Tr> <Tr> <Td> </Td> <Td> Input / Output </Td> <Td> Indicates the process of inputting and outputting data, as in entering data or displaying results . Represented as a parallelogram . </Td> </Tr> <Tr> <Td> </Td> <Td> Annotation (Comment) </Td> <Td> Indicating additional information about a step the program . Represented as an open rectangle with a dashed or solid line connecting it to the corresponding symbol in the flowchart . </Td> </Tr> <Tr> <Td> </Td> <Td> Predefined Process </Td> <Td> Shows named process which is defined elsewhere . Represented as a rectangle with double - struck vertical edges . </Td> </Tr> <Tr> <Td> </Td> <Td> On - page Connector </Td> <Td> Pairs of labeled connectors replace long or confusing lines on a flowchart page . Represented by a small circle with a letter inside . </Td> </Tr> <Tr> <Td> </Td> <Td> Off - page Connector </Td> <Td> A labeled connector for use when the target is on another page . Represented as a home plate - shaped pentagon . </Td> </Tr> </Table> <Tr> <Th> ANSI / ISO Shape </Th> <Th> Name </Th> <Th> Description </Th> </Tr>

What does a rhombus mean in a flow chart