Copy, create, cut, delete, edit, and paste datum lines, either defined by a range or
        the marked entity.
        Syntax
            
            xy
                datumhorizontal
                copy
                <mark|marked|range>
            xy
                datumhorizontal
                create
                <mark|marked|range>
                <name>=<value>
            xy
                datumhorizontal
                cut
                <mark|marked|range>
            xy
                datumhorizontal
                delete
                <mark|marked|range>
            xy
                datumhorizontal
                edit
                <mark|marked|range>
            xy
                datumhorizontal
                paste
                <mark|marked|range>
        
        Arguments
            
            
                
                    - create
- Create a horizontal datum by specifying datum attributes.
- Select mark, marked, or
                            range to apply the attributes to the specified
                            datum(s).
                            
                                - mark
- mark=<marklabel>
- marked
- <true/false>.
- True applies the action to the marked
                                    entity.
- range
- Define the range for the entity you want to apply the action
                                    to.
 
- The attributes include:
                            
                                - associatedaxis=<axisname>
- The axis the datum line is associated with.
- font=<font>
- Define the font type.
- fontsize=<fontsize>
- Define the font size.
- label=<label>
- The datum line label.
- labellocation=<location>
- Select the location for the datum label in the modeling
                                    window.
- Options include:
                                        - Upper Left
- Upper Center
- Upper Right
- Lower Left
- Lower Center
- Lower Right
- Mouse Over
 
- layer=<layerid>
- The layer ID.
- linecolor=<color>
- Set the datum line color by selecting a color from the color
                                    picker.
- linestyle=<style>
- Enter a value from 0-5 to set the datum line style.
- linethickness=<thickness>
- Enter a value of 0-4 to set the datum line thickness.
- name=<name>
- The datum line name.
- position = <position>
- A value for the position of the datum.
- The value entered can be any of the following:
                                        - A single value.
- A math expression that returns a single value (without
                                            curly brackets, {}).
- A math expression as a function of x or y, with x or y
                                            being the horizontal or vertical axes values,
                                            respectively.
 
- visibility
- true displays the datum line in the
                                    modeling window.
 
- copy
- Copies the selected entity.
                            
                                - mark
- mark=<marklabel>
- marked
- <true/false>.
- True applies the action to the marked
                                    entity.
- range
- Define the range for the entity you want to apply the action
                                    to.
 
- cut
- Removes the selected entity from the Plot Browser and
                        deletes it from the current session.
                            
                                - mark
- mark=<marklabel>
- marked
- <true/false>.
- True applies the action to the marked
                                    entity.
- range
- Define the range for the entity you want to apply the action
                                    to.
 
- delete
- Deleted the selected entity.
                            
                                - mark
- mark=<marklabel>
- marked
- <true/false>.
- True applies the action to the marked
                                    entity.
- range
- Define the range for the entity you want to apply the action
                                    to.
 
- edit
- Edit the selected entity's properties.
                            
                                - mark
- mark=<marklabel>
- marked
- <true/false>.
- True applies the action to the marked
                                    entity.
- range
- Define the range for the entity you want to apply the action
                                    to.
 
- Editable properties include:
                            
                                - associatedaxis=<axisname>
- The axis the datum line is associated with.
- font=<font>
- Define the font type.
- fontsize=<fontsize>
- Define the font size.
- label=<label>
- The datum line label.
- labellocation=<location>
- Select the location for the datum label in the modeling
                                    window.
- Options include:
                                        - Upper Left
- Upper Center
- Upper Right
- Lower Left
- Lower Center
- Lower Right
- Mouse Over
 
- layer=<layerid>
- The layer ID.
- linestyle=<style>
- Enter a value from 0-5 to set the datum line style.
- linecolor=<color>
- Set the datum line color by selecting a color from the color
                                    picker.
- linethickness=<thickness>
- Enter a value of 0-4 to set the datum line thickness.
- name=<name>
- The datum line name.
- position = <position>
- A value for the position of the datum.
- The value entered can be any of the following:
                                        - A single value.
- A math expression that returns a single value (without
                                            curly brackets, {}).
- A math expression as a function of x or y, with x or y
                                            being the horizontal or vertical axes values,
                                            respectively.
 
- visibility
- true displays the datum line in the
                                    modeling window.
 
- paste
- Pastes the selected entity into a window.
                            
                                - mark
- mark=<marklabel>
- marked
- <true/false>.
- True applies the action to the marked
                                    entity.
- range
- Define the window range for the entity you want to apply the
                                    action to.
 
Examples
            
            Create a horizontal
                datum:
xy datumhorizontal create range= "p:1 w:1 i:6" name= "Datum 8" linecolor=36 linestyle= 2 linethickness= 2 visibility= true font= "Arial 8 normal roman" associatedaxis= 1 label= Datum New 
Delete a horizontal
                datum:
xy datumhorizontal delete range="p:all w:all i:all"
Edit the datum's
                color:
xy datumhorizontal edit range="p:1 w:all i:all" linecolor=2