Merge pull request modelica#162 from klausschuch/pu/klausschuch/use_o…

…nly_terminals

Use only terminals (remove structured naming convention)

docs/2____common_concepts.adoc

@@ -19,12 +19,12 @@ Terminal definitions are used differently within the "high cut" and the "low cut
 [#figure-terminal-relations]
 image::terminal_relations.svg[width=60%, align="center"]
 
-All variables have structured names or specific terminal `memberNames` that indicate how these variables are related and to which abstraction layer they belong.
+Variables are referenced in terminals and the `memberName` attribute indicates how a variable is meant to be used.
 For the "high cut", variables represent signals and their Clocks.
-For the "low cut", variables represent transmitted and received bus traffic (`Tx_Data`/`Rx_Data`) and their respective Clocks (`Tx_Clock`/`Rx_Clock`).
+For the "low cut", variables represent transmitted and received bus traffic (`memberName` = `Tx_Data`/`Rx_Data`) and their respective Clocks (`memberName` = `Tx_Clock`/`Rx_Clock`).
 The `causality` of `Rx_Data` variables must be `input`, whereas the `causality` of `Tx_Data` variables must be `output`.
-`Rx_Clock` variables must be `triggered input` Clocks and are connected by the importer to their corresponding `Tx_Clocks`, which can have any `causality` and `intervalVariability`.
-For example, a `periodic` Clock indicates that the FMU can only send signals or frames periodically, while a `changing` or `countdown` Clock indicates that the FMU can send signals at varying time steps.
+`Rx_Clock` variables must be `triggered input` Clocks and are meant to be connected by the importer to the corresponding `Tx_Clock` variables.
+A `periodic` Clock indicates that the FMU can send signals or frames only periodically on a given time raster, while a `changing` or `countdown` Clock indicates that the FMU can send signals at varying time steps.
 
 Using `Tx_Clocks` of different types allows simulations with different timing accuracy and performance.
 Some Clock types allow the FMU to specify the next send event efficiently and accurately.