Set Total O&M Cost (Coam) tooltip text from theoretical basis

Author: softwareengineerprogrammer

src/geophires_x/Economics.py

@@ -2020,7 +2020,9 @@ def __init__(self, model: Model):
             display_name='Total operating and maintenance costs',
             UnitType=Units.CURRENCYFREQUENCY,
             PreferredUnits=CurrencyFrequencyUnit.MDOLLARSPERYEAR,
-            CurrentUnits=CurrencyFrequencyUnit.MDOLLARSPERYEAR
+            CurrentUnits=CurrencyFrequencyUnit.MDOLLARSPERYEAR,
+            ToolTipText=f'GEOPHIRES estimates the annual O&M costs as the sum of the annual surface plant, wellfield, '
+                        f'make-up water, and pumping O&M costs.'
         )
         self.averageannualpumpingcosts = OutputParameter(
             Name="Average Annual Pumping Costs",

src/geophires_x_schema_generator/geophires-result.json

@@ -523,7 +523,7 @@
         "Total average annual O&M costs": {},
         "Total operating and maintenance costs": {
           "type": "number",
-          "description": "Total O&M Cost",
+          "description": "Total O&M Cost. GEOPHIRES estimates the annual O&M costs as the sum of the annual surface plant, wellfield, make-up water, and pumping O&M costs.",
           "units": "MUSD/yr"
         },
         "OPEX": {}