You can use the Feedback page to request this feature for Software Informer client. Visit the page and fill the form with your request. Once the request has been sent, stay tuned for future updates and releases of the client to check if this feature was implemented.
As a temporary solution, open Software Informer client and and click on an application. Once the page is loaded, click the FULL INFO in the upper area and a page will open. After the page loaded in your default browser, ask the question using the form on the right where you can use copy and paste as well as delete and backspace.