Drag and Drop
- Enable Drag and Drop for Cut, Copy, Paste Use
- Lets you drag objects in tabs (for copying, pasting or cutting purpose only).
Note:
This option does not apply to section configuration.
By default, this option is selected.
Memory Warning
- Trigger memory warning at ... % of memory use
- This option helps you to save your data before a crash occurs due to excessive memory use.
A
warning pop up when the process memory use exceeds a certain percentage of the address
space usage or when the remaining free memory fragmentation reach a certain threshold.
The following message warns you that because the amount of remaining memory is
becoming low, you should save your data and exit the session:
Warning: Memory limitation is exceeded Recommendation: please try to save
your data and re-start the session
Check this option and set the percentage of address space indicating when to trigger
the warning. This will set the limit value for address space use and fragmentation.
The thresholds may be changed but it is not advisable, except for expert users.
Once the warning is generated, the warning in itself should not crash or freeze your
session.
Limitations:
- This check involves a small performance hit, so it is made generally at the end of
interactions. This means that in particular scenarios where the memory consumption
increases very fast (passes from low consumption to very high consumption in only
one interaction), the warning may come too late. In other terms, this warning does
not protect absolutely all scenarios, only a high percentage of them. This
limitation is inherent in the specification and will never be suppressed.
- On UNIX, the fragmentation of the remaining free memory is useless as the memory
manager addresses this aspect well. Furthermore, it cannot be calculated. So the
performance cost of the checking is not an issue on UNIX platforms.
- On UNIX, the warning popup will only be generated once, the first time the
threshold is passed. If you free enough memory to come under the threshold and then
exceed the threshold later, the warning will not be generated a second time because
the system has no way of knowing the threshold was exceeded again.
- This option activates the warning for both the memory space usage and for the
remaining memory space fragmentation. However, only the limit value on memory space
usage may be specified by the user or administrator. The fragmentation threshold is
not customizable. However, it is activated.
This option is cleared.
Note:
On 64 bits, the address space size is huge.
With the current existing hardware (physical resource), the threshold of warning
generation cannot be obtained. Therefore this warning will not be triggered on 64-bit
platforms on currently available computers. However, the mechanism is kept for the
future in case computer hardware evolves over in the next year.