In mathematical expressions it is common to use symbols for variables and parameters - greek letters are popular. This makes equations more compact and also international - ρ is understood by French and English phycisists to be //density//. 

MERLIN-Expo uses symbols in the [[model screen#information]] and in the [[report screen|report]]  and the [[user_interface#information|information window]] to keep the expressions short and as close to pure mathematical notation as possible. 

===Automatic symbols===

Most [[block|blocks]] are never assigned symbols. Instead, MERLIN-Expo will generate a symbol from the [[name]]. If names of greek letters appear in the name, such as in "Alpha" and "k_beta", these will be replaced with actual greek letters. The first underscore will be used as a sub notation and every subsequent underscore will be written as a comma (','). For example:

^Name^Symbol^
|Kd_soil|Kd<sub>soil</sub>|
|rho_soil_dry|ρ<sub>soil,dry</sub>|
|Lambda_0|Λ<sub>0</sub>|

====See also====
  * [[Name]]
  * [[Full name]]
  * [[Description]]