Altera SDC and TimeQuest API - Manual (Page 89)

Chapter 2: SDC and TimeQuest API Package and Commands 2–79
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© December 2009 Altera Corporation SDC and TimeQuest API Reference Manual
enable_sdc_extension_collections
Usage
enable_sdc_extension_collections [-off] [-on]
Options
-off: Disable this setting.
-on: Enable this setting.
Description
Enable the support of SDC extension collections, such as keeper, register and node collections. When
enable_sdc_extension_collections is not used, using these collections causes an error. Default to -on
option.
Example
project_open top
enable_sdc_extension_collections -on
create_timing_netlist
read_sdc
report_timing -to_clock clk1
delete_timing_netlist
project_close