Change symbol on open chart?

 
Hello,

The help says this:

Uninitialize reason codes returned by UninitializeReason() function. It can be any one of the following values:

Constant Value Description
.......
REASON_CHARTCHANGE 3 symbol or timeframe changed on the chart.
.......


How do you change the symbol of an open chart using the mouse and menus?

How do you change the symbol of an open chart in a script?

Thank you for your help.
 
double click in the left lower corner of chart (or press spacebar on the active chart). Put symbol name and press enter
drag and drop some symbol from market watch on the existing chart
Experts and scripts cannot change symbol in its own charts
 
double click in the left lower corner of chart (or press spacebar on the active chart). Put symbol name and press enter
drag and drop some symbol from market watch on the existing chart
Experts and scripts cannot change symbol in its own charts



Thank you very much! I know it is difficult to help us English speaking people and I want you to know I appreciate your efforts.
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