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I am struggling with this since last 3 days. I want to know how to decrease size of text in header. Following is the program
\documentclass[a4paper,14pt]{memoir}
\linespread{1.5}
\usepackage{float}
\setsecnumdepth{none}
\usepackage{color}
\usepackage{caption}
\usepackage{graphicx}
\addtopsmarks ...