Microsoft Office 2013 (codenamed Office 15) is a version of Microsoft Office, a productivity suite for Microsoft Windows. It is the successor to Microsoft Office 2010 and the predecessor to Microsoft Office 2016.ffice 2013 is suitable for IA-32 and x64 systems and requires Windows 7, Windows Server 2008 R2 or a later version of either. A version of Office 2013 comes included on Windows RT devices. Mainstream support ends on April 10, 2018.
Black Toenail â Causes, Treatment, and Prevention. There are many causes of black or dark toenails, but the most common cause is trauma. When trauma occurs to a nail resulting in discoloration it is referred to as a subungual hematoma, which simply means there is a collection of blood underneath the nail.
A nail fungal infection may begin as a white or yellow spot under the tip of your fingernail or toenail. As the nail fungus spreads deeper into your nail, it may cause your nail to discolor, thicken and develop crumbling edges â an unsightly and potentially painful problem.